Rhetorical synthesis: two-part goals and audiences

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Difficulty: Advanced
Estimated time: 30 minutes
Practice: Rhetorical Synthesis question bank

What you’ll learn

Spot a notes goal with a second demand: two tasks, a claim to make and support, or an audience.
List every demand before you read the choices, and tick each one off in every choice.
Unpack a word that holds two demands, like significance: what happened, and why it matters.
Pick the choice that makes a claim and backs it with a fact from the notes.
Give an unfamiliar audience who or what something is, and a familiar audience none of it.
Check both halves of the last choices against the notes.

Prerequisites

Rhetorical synthesis: how to answer SAT student notes questions0%
Read the goal first, name its shape, then check the notes.

Why this matters on the SAT

Half an answer is a wrong answer

A rhetorical synthesis (student notes) goal can ask for two things at once: introduce something and explain why it matters, make a claim and support it, or describe something for a particular audience. The most tempting wrong choice usually does one of the two, and does it well. So the question becomes: does this choice do everything the goal asks?

SAT example

While researching a topic, a student has compiled the following notes:

Firefly squid emit a vivid blue light through a chemical process known as bioluminescence.
Each spring, enormous shoals of firefly squid rise to the surface of Toyama Bay, Japan.
Scientists investigate these squid to gain insight into the light-producing proteins involved in bioluminescence.
The glowing displays may help the squid communicate with one another and evade predators.

The student wants to introduce firefly squid and explain why they are of interest to scientists. Which choice most effectively uses relevant information from the notes to accomplish this goal?

A
Each spring, firefly squid gather in Toyama Bay, Japan, where their vivid blue bioluminescent glow attracts tourists and scientists alike to the surface waters.
B
Firefly squid produce blue bioluminescent light, and scientists study these springtime shoals in Toyama Bay, Japan, to learn how their light-producing proteins work.
C
Bioluminescence helps firefly squid communicate and avoid predators, so each spring they rise to the surface in enormous shoals in Toyama Bay, Japan.
D
Firefly squid, which scientists study because they gather in Toyama Bay each spring, glow blue in the dark and rise to the surface in enormous shoals.

Solution to the example

Goal: introduce firefly squid and explain why they are of interest to scientists: two demands.

Shape: what the squid are, plus the reason scientists study them.

Cross out: C's reason is why the squid glow, not why scientists care.

Check: D's reason, that the squid gather each spring, isn't in the notes; the notes say scientists study their light-producing proteins. B meets both demands and matches the notes, so the answer is B.

A tempts most: it introduces the squid vividly and says the glow draws scientists, but not what they study (and the notes never mention tourists).

List every demand, then tick each one off

Every notes question runs the routine from Rhetorical synthesis: how to answer SAT student notes questions:

Read the goal first: the sentence after “The student wants to”, before the notes.
Name the answer's shape: what the right sentence must say: its subject, the kind of statement (an aim, a finding, a generalization, a definition), and every part of the goal.
Cross out what misses the goal, even when it's true to the notes.
Check the notes: for the choices left, every fact matches the notes (who, which, when, which direction), and nothing goes beyond them.

This lesson is about step 2 when the goal asks for more than one thing. A demand is one thing the goal says the sentence must do or contain. So list every demand, then tick each one off in every choice: a choice that misses one is crossed out, however good the rest of it is. In the goals here, the key words are bold, and what in a sentence meets them is underlined.

The plainest two-part goal joins its demands with “and”: two verbs (identify … and explain), or one verb with two things after it (introduce the novel and its author). Here are a few notes and a two-part goal:

Note: Notes: The Kestrel Line ferry switched to electric power in 2019. Engineer Rosa Lind designed its electric engine. The engine produces no exhaust.
Note: Goal: The student wants to identify who designed the ferry's engine and explain one benefit of the engine.
Wrong: Designer only: Engineer Rosa Lind designed the electric engine of the Kestrel Line ferry, which switched to electric power in 2019.
Wrong: Benefit only: The Kestrel Line ferry's electric engine produces no exhaust.
Correct: Engineer Rosa Lind designed the Kestrel Line ferry's electric engine, which produces no exhaust.

The first wrong sentence feels complete: it's longer, it has a name, a date and the ferry. But it never says what the engine does well. The trap usually meets one demand in more detail than the answer, and skips the other.

Check your understanding:

How many demands does this goal make? The student wants to introduce a novel and its author.

In this question, list the demands before you read the choices.

Stephanie Kwolek and Kevlar

Practice problem

While researching a topic, a student has taken the following notes:

Chemist Stephanie Kwolek worked for the DuPont company.
In 1965, Kwolek discovered an unusual liquid-crystal polymer solution.
Her discovery led to the development of Kevlar, a strong and lightweight fiber.
Kevlar is used in protective body armor.

The student wants to identify the scientist whose discovery led to Kevlar and explain one practical use of the fiber. Which choice most effectively uses relevant information from the notes to accomplish this goal?

One word can hold two demands

Not every two-part goal says “and”. Some words hold two demands on their own, and the one the SAT uses most is significance. A goal that asks for something's significance, or why it was significant, needs what happened and why it matters. A fact alone, however exact, is half.

Note: Notes: The Kestrel Line ferry switched to electric power in 2019. It became the first ferry on the bay to run without exhaust.
Note: Goal: The student wants to explain the significance of the Kestrel Line ferry's switch.
Wrong: What happened only: In 2019, the Kestrel Line ferry switched to electric power.
Correct: The Kestrel Line ferry's 2019 switch to electric power made it the first ferry on the bay to run without exhaust.

The wrong sentence is true and exact, and it reads like an answer. But it says what happened, not why it matters. A few other goal words work the same way: reciprocal asks what each side gives the other, and trade-off asks for a gain and the cost that comes with it. Unpack the word into its demands first, then tick them off as before.

Check your understanding:

What two things must the sentence say? The student wants to emphasize the significance of the town's 1890 bridge.

This question hides its two demands in one word: unpack significant first.

The Pony Express

Practice problem

While researching a topic, a student has taken the following notes:

The Pony Express began carrying mail between St. Joseph, Missouri, and Sacramento, California, in April 1860.
Riders passed mail from one relay station to another, reducing delivery time to about ten days.
The service operated for only about 18 months.
It ended soon after the transcontinental telegraph was completed in October 1861.
Despite its brief existence, the Pony Express demonstrated the demand for rapid communication across the United States.

The student wants to explain why the Pony Express was historically significant despite operating for only a short time. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Make and support: a claim plus the fact that backs it

Make and support a claim and make and support a generalization are two demands in a few words. The claim is the point the sentence argues; when the goal says generalization, it's a statement true of every case in the notes, with no single case as its subject. The support is a fact from the notes that shows the claim is true. Here are notes about three ferries:

Note: Notes: The Kestrel Line ferry cut its fuel costs by 60 percent after switching to electric power. Two other electric ferries cut theirs by about half.
Note: Goal: The student wants to make and support a generalization about electric ferries.
Wrong: Support only: The Kestrel Line ferry cut its fuel costs by 60 percent after switching to electric power.
Wrong: Claim only: Electric ferries can cut their operators' fuel costs.
Correct: Electric ferries can cut their operators' fuel costs: the Kestrel Line ferry, for one, cut its fuel costs by 60 percent after switching.

The first wrong sentence has the most exact fact, so it feels like the strongest answer. But a fact about one ferry isn't a statement about electric ferries; it's the support with no claim. The second makes the claim with nothing behind it. The answer often puts the claim first, then the fact after a colon, “as” or “for example”. Facts without a claim are half the goal, and so is a claim with nothing behind it.

In this question, look for a choice that says what the details show, not just the details.

Settings in two novels

Practice problem

While researching a topic, a student has taken the following notes:

Literary critics often examine how novelist Elena Mar uses setting to reflect characters’ emotional states.
In "The Salt Orchard," an abandoned coastal farm becomes increasingly overgrown as the protagonist, Mara, withdraws from her family.
The farm’s deterioration echoes Mara’s growing isolation.
In "A Map of Ash," a fire-damaged neighborhood is gradually rebuilt as the protagonist, Julian, reconnects with his community.
The neighborhood’s renewal echoes Julian’s emotional recovery.

The student wants to make and support a generalization about how Mar uses changing settings in both novels. Which choice most effectively uses relevant information from the notes to accomplish this goal?

An unfamiliar audience needs who or what it is

When the goal names an audience, the audience is a demand too. To an audience unfamiliar with X, to readers who may not know it, to readers who have never heard of her: the sentence must say who or what X is, in a few words (a chemist, an electric ferry, a type of story), usually with the full name. Introduce X to a new audience asks the same: what X is, plus the point the goal names.

Note: Goal: The student wants to introduce the Kestrel Line to an audience unfamiliar with it.
Wrong: No background: Since 2019, the Kestrel Line has carried 1,200 commuters a day across the bay.
Correct: The Kestrel Line, an electric ferry that crosses the bay, has carried 1,200 commuters a day since 2019.

A reader who has never heard of the Kestrel Line can't tell from the first sentence whether it's a ferry, a bus or a train. The trap is often a vivid, true detail with no background. The answer is often the longest choice, but that's a habit, not a rule.

The audience doesn't replace the goal's other demands. Introduce her to an audience unfamiliar with her and emphasize her main discovery needs who she is and the discovery. For an unfamiliar audience, who or what it is counts as one of the demands.

Check your understanding:

What must the sentence contain? The student wants to introduce the term tidal bore to readers who may not know it.

In this question, ask what a reader who has never heard the word needs first.

Petrichor

Practice problem

While researching a topic, a student has taken the following notes:

Petrichor is the earthy smell that can occur after rain falls on dry ground.
The smell is produced partly by oils released from plants and a compound called geosmin that comes from soil bacteria.
Petrichor is often most noticeable after a long dry spell.
The word petrichor was coined in 1964 by two Australian researchers.
Some writers use the word petrichor to describe the scent after a storm.

The student wants to introduce the term petrichor to readers who may not know it. Which choice most effectively uses relevant information from the notes to accomplish this goal?

A familiar audience doesn’t need it explained

To an audience already familiar with X works the other way. The audience knows what X is, so a sentence that explains X spends its words on something they know. Give the goal's point, and leave X undefined.

Note: Goal: The student wants to present the finding about the ferry's repairs to an audience already familiar with electric ferries.
Correct: In its first year, the Kestrel Line's electric ferry needed 70 percent fewer repairs than the diesel boat it replaced.
Wrong: Explains what they know: An electric ferry runs on batteries instead of diesel fuel, and in its first year the Kestrel Line's needed 70 percent fewer repairs than the diesel boat it replaced.

Both sentences give the full finding. Only the audience tells them apart: the second explains what an electric ferry is, and this audience already knows. It's tempting to think more background can't hurt. For this audience it's beside the goal, the same as any other off-goal fact. For an unfamiliar audience, background is a demand; for a familiar one, it's a reason to cross a choice out.

In this question, one note is there for readers who don't know the term. Ask whether this audience needs it.

Thematic audio guides

Practice problem

While researching a topic, a student has taken the following notes:

Researchers Priya Nair and Thomas Bell studied audio guides at a history museum.
One group of visitors used a guide organized chronologically, while another group used a guide organized by themes.
On a follow-up task, visitors who used the thematic guide correctly connected artifacts from different periods 35% more often than visitors who used the chronological guide.
Thematic organization groups material by shared ideas instead of dates.

The student wants to present the study's findings to an audience already familiar with thematic organization. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Then check the notes: both halves must be true

Ticking off the demands leaves the choices with the right shape. When more than one is left, step 4 decides: check each half against the notes. A choice can meet every demand and still get one half wrong: a swapped subject, a reversed order, a claim the notes don't make.

Note: Notes: Engineer Rosa Lind designed the Kestrel Line ferry's electric engine. The engine produces no exhaust. The ferry's new hull shortens the crossing by ten minutes.
Note: Goal: The student wants to identify who designed the ferry's engine and explain one benefit of the engine.
Correct: Engineer Rosa Lind designed the Kestrel Line ferry's electric engine, which produces no exhaust.
Wrong: Swapped subject: Engineer Rosa Lind designed the Kestrel Line ferry's electric engine, which shortens the crossing by ten minutes.

Both sentences tick both boxes, a designer and a benefit. But the shorter crossing comes from the new hull, not the engine. Ticking a demand isn't the end: the words that tick it must match the notes.

In this question, every choice gives a definition and an example. Check each half against the notes.

Feathers and flight

Practice problem

While researching a topic, a student has taken the following notes:

An adaptation is a feature shaped by natural selection for the role it currently plays.
An exaptation is a feature that originally evolved for one function but later became useful for a different function.
Fossils of some nonbird dinosaurs show evidence of feathers even though those animals could not fly.
Many scientists think early feathers helped with insulation or display.
In the lineage that led to birds, feathers were later used as part of flight.

The student wants to define exaptation and provide a relevant example. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Example: a trade-off where the notes decide

In this question, three choices set a gain against a cost for each kind of farm, and the fourth reads like one, so the notes have to decide.

Worked example

While researching a topic, a student has taken the following notes:

Coffee can be grown under a diverse tree canopy ("shade-grown") or in open fields with few trees ("sun-grown").
Shade-grown farms provide habitat for migratory birds and other wildlife.
Shade-grown farms generally use fewer synthetic pesticides because the canopy supports insects that eat pests.
Shade-grown farms often produce lower coffee yields per acre than sun-grown farms.
Sun-grown farms are associated with higher yields per acre but reduced wildlife habitat and greater reliance on synthetic pesticides.

The student wants to present the key trade-off between shade-grown and sun-grown coffee farming. Which choice most effectively uses relevant information from the notes to accomplish this goal?

A
Shade-grown coffee supports wildlife and generally uses fewer synthetic pesticides, but often has lower yields per acre than sun-grown coffee, which yields more while reducing habitat and using more pesticides.
B
Shade-grown coffee supports wildlife and generally uses fewer synthetic pesticides, and it often has higher yields per acre than sun-grown coffee, which reduces habitat and uses more pesticides.
C
Shade-grown coffee supports wildlife but often has lower yields per acre than sun-grown coffee, which yields more while generally using fewer synthetic pesticides and offering less habitat.
D
Shade-grown coffee supports wildlife and generally uses fewer pesticides, while sun-grown coffee yields more per acre and relies more on synthetic pesticides, with little reduction in wildlife habitat.

Step 1

Unpack “trade-off” into its demands

The goal is to present the key trade-off between shade-grown and sun-grown coffee farming. A trade-off is a gain and the cost that comes with it, so each way of farming needs both: what it gains, and what it gives up to get it.

Step 2

Name the shape from the notes

Shade-grown has two gains: Shade-grown farms provide habitat for migratory birds and other wildlife. And Shade-grown farms generally use fewer synthetic pesticides. Its cost: Shade-grown farms often produce lower coffee yields per acre than sun-grown farms. Sun-grown is the mirror image: Sun-grown farms are associated with higher yields per acre, with less habitat and more pesticides.

Step 3

Every choice looks like a trade-off, so check the notes

C tempts most. It reads like a clean trade-off, with shade's wildlife against sun's yield, but it gives sun the fewer synthetic pesticides, and the notes give that to shade. C goes.

B says shade often has higher yields per acre; the notes say lower. With higher yields, shade gives up nothing, so B isn't even a trade-off. B goes. D says sun farming comes with little reduction in wildlife habitat; the notes say reduced habitat, so D goes.

Step 4

Check the last choice

A gives each kind of farm the gains and costs the notes give it, every half in place. The answer is A.

Example: say what the field is, then get the study right

In this question, the fullest account of the study leaves out what this audience needs first.

Worked example

While researching a topic, a student has taken the following notes:

A neural interface, sometimes called a brain-computer interface (BCI), links activity in the nervous system to an external device.
Noninvasive BCIs often use electrodes on the scalp (EEG) but can capture only coarse signals.
In 2023 neuroscientist Amina Rao and colleagues tested a flexible electrode array placed on the surface of the brain in volunteers with paralysis.
As participants silently mouthed sentences, a computer model decoded the array’s signals and produced text; accuracy improved after the model was trained on each participant.
Rao emphasized that the system does not read general thoughts and currently requires surgery.

The student wants to present Rao’s research to an audience unfamiliar with neural interfaces. Which choice most effectively uses relevant information from the notes to accomplish this goal?

A
A neural interface links nervous-system activity to an external device, and in 2023 Rao used electrodes on the scalp to decode signals from mouthed sentences into text for volunteers with paralysis.
B
A neural interface links nervous-system activity to a device, and Rao’s 2023 study used one on the brain’s surface to decode signals from mouthed sentences into on-screen text for people with paralysis.
C
A neural interface links nervous-system activity to an external device, and Rao emphasized that her team’s 2023 system requires surgery, must be trained on each participant, and does not read general thoughts.
D
In 2023, Rao and colleagues placed a flexible electrode array on the surface of the brain in volunteers with paralysis and used a computer model to convert signals from silently mouthed sentences into text.

Step 1

List the demands

The goal is to present Rao’s research to an audience unfamiliar with neural interfaces. Two demands: what Rao's research did, and, for this audience, what a neural interface is.

Step 2

Name the shape from the notes

The background is in the first note: A neural interface, sometimes called a brain-computer interface (BCI), links activity in the nervous system to an external device. The research is in the third and fourth: In 2023 neuroscientist Amina Rao and colleagues tested a flexible electrode array placed on the surface of the brain in volunteers with paralysis. A computer model turned the signals from mouthed sentences into text. So the shape: what a neural interface is, then what Rao's team did with one.

Step 3

Cross out what misses a demand

D tempts most: it's the most exact account of the study, with the array, the volunteers and the computer model. But it never says what a neural interface is, and a reader new to the field needs that first. D goes.

C defines a neural interface, then gives Rao's cautions instead of her research: what the system can't do, not what the study did. C goes.

Step 4

Check the notes for the last two

A and B both define a neural interface and describe the study. A says Rao used electrodes on the scalp, but scalp electrodes are the other kind the notes describe: Noninvasive BCIs often use electrodes on the scalp (EEG) but can capture only coarse signals. Rao's array sat on the surface of the brain. A goes.

B has the definition, the brain's surface and the text from mouthed sentences, and nothing beyond the notes but where the text appears. The answer is B.

Practice problems

These questions mix the cases, so on each one, read the goal first, list every demand, and check what's left against the notes.

Alice Ball

Practice problem

A student has taken the following notes:

Alice Ball was an American chemist.
In 1915, she became the first woman and the first African American to earn a master's degree from the College of Hawaii.
Ball developed a method for turning chaulmoogra oil into an injectable treatment.
The treatment was used for people with Hansen's disease.
Ball's method remained a leading treatment until new medicines became available in the 1940s.
Ball died in 1916 at age 24.

The student wants to introduce Ball to an audience unfamiliar with her and emphasize her major scientific contribution. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Mycelium packaging

Practice problem

While researching a topic, a student has taken the following notes:

Mycelium is the rootlike network of fungi that grows beneath a mushroom.
Some manufacturers grow mycelium around agricultural waste (such as corn stalks or husks) to create a foam-like material.
The material can be used to make protective packaging similar to polystyrene foam.
Unlike many petroleum-based packaging materials, mycelium packaging is biodegradable and can be composted.
To make a finished packaging form, the material is grown in a mold and then heat-treated to stop further growth.

The student wants to introduce mycelium packaging to an audience unfamiliar with it and emphasize why it is considered a more sustainable alternative to conventional packaging. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Protection from bright light

Practice problem

While researching plant biology, a student has compiled the following notes:

Photosynthesis begins when chlorophyll absorbs light energy.
In bright light, chlorophyll molecules in some plants can become damaged.
To guard against this, certain plants activate protective mechanisms that dissipate excess energy as heat.
One such mechanism, non-photochemical quenching, can switch on and off within seconds as light intensity changes.

The student wants to add a sentence to a report that makes and supports a claim about how quickly some plants can protect themselves from light-induced damage. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Finish the lesson

9 practice examples left

Finish the remaining questions correctly to complete this lesson.

Quick recap

List every demand, then tick each one off: two tasks joined by “and” are two demands, and a choice that meets one is wrong, however good it is.
One word can hold two demands: significance needs what happened and why it matters; reciprocal and trade-off work the same way.
Make and support needs a claim and the fact behind it: facts alone, or a claim alone, is half.
An unfamiliar audience needs who or what the subject is; a familiar audience doesn't, so a choice that explains it anyway goes.
Every question: read the goal first, name the answer's shape (every demand, the audience included), cross out what misses the goal, then check the notes (both halves).

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