Question 144·Medium·Text Structure and Purpose
The following text is adapted from the field journal of a wetland ecologist.
I arrived with a checklist: chart the channels, count reeds, record salinity by quadrant. By noon, my tidy boxes dissolved. What looked like a single channel braided and unbraided with every wind shift; reeds hid seedlings of two species whose leaves were indistinguishable until dusk; salinity leapt at the turn of tide. I stopped grading the marsh for its compliance with my plan and instead let its habits introduce themselves. Patterns appeared only when I watched long enough for exceptions to repeat. The marsh, I realized, is less a problem to solve than a conversation to sustain.
Which choice best describes the main purpose of the text?
For main-purpose questions, first read the entire passage or excerpt, then summarize in your own words what happens from beginning to end in one short sentence. Next, notice any shift in attitude, method, or focus—that shift often is the purpose. Then, eliminate choices that bring in ideas not mentioned (like money, folklore, or extra locations) or that focus on minor details instead of the overall movement of the passage. Finally, choose the option that best captures both what the passage mostly does and how the narrator’s perspective or approach changes, if it does.
Hints
Look at the beginning and the end of the passage
What is the narrator doing in the first two sentences, and how is their attitude or approach different by the last sentence?
Ask what the examples are supporting
The details about channels, reeds, and salinity—are they being used to persuade about money, correct stories, compare places, or to show something about the narrator’s method?
Check for topics that never appear
Before picking an answer, ask yourself: Does the passage mention anything about economics, folklore, or comparing two different wetlands explicitly?
Step-by-step Explanation
Identify what most of the passage talks about
Read the whole passage and ask: What is happening from start to finish? The narrator begins by listing a strict checklist for studying the marsh, then describes how the marsh doesn’t fit neatly into that checklist, and finally reflects on a new way of thinking about the marsh (“less a problem to solve than a conversation to sustain”).
Notice the change in the narrator’s thinking
Look for any shift in attitude or method. At first, the narrator has “tidy boxes” and is “grading the marsh for its compliance with my plan,” which shows a rigid, planned approach. Then the narrator says they “stopped” doing that and instead “let its habits introduce themselves.” This shows a clear change: from forcing the marsh into a plan to adjusting the plan to fit the marsh’s complexity.
Connect details to the passage’s overall purpose
The examples about channels changing, reeds hiding seedlings, and salinity shifting all support the idea that the marsh is more complex and dynamic than the narrator expected. These details are not about money, folklore, or comparing different places; they are used to show why the narrator’s original plan fails and has to change.
Match that purpose to the best answer choice
Now, pick the option that matches the narrator’s shift from a rigid checklist to a more flexible, observant approach in response to the marsh’s complexity. Choice A) To recount how the narrator revises an initial, rigid research plan after recognizing the ecosystem’s complexity directly describes this change and is therefore the best description of the text’s main purpose.