A punctuation question with a long opening tests how the words around the blank fit together. Read both sides and find the subject and verb, then ask whether each side can stand alone. A colon needs a complete sentence before it; a semicolon needs one on each side. A comma can set off extra words, but no mark goes directly between a subject and its verb. Use sentence structure, not pauses to decide whether any punctuation is needed.
Hints
- Hint 1
Start with the words before the blank. Ask whether they form a complete sentence, including a word that tells what the person did.
- Hint 2
Look after the blank for the verb that tells what the person did. Ask which words tell you who did it.
- Hint 3
Shrink the full subject to one pronoun. Then read it next to the verb and ask how those words join.
Step-by-step
Test the marks, then shrink the subject
Step 1Test the colon and semicolon
Start with The gifted British botanist and Himalayan explorer Joseph Dalton, since we're deciding what punctuation, if any, can follow this person's name. A colon needs a full sentence before it, and a semicolon needs a full sentence on each side. Can the opening meet that test? Even after the name is finished, these words only identify someone and have no verb saying what he did, so they aren't a full sentence. That rules out the version with a colon and the version with a semicolon.
- Step 2
Find the subject and its verb
Which word tells us what that person did? In corresponded extensively with Charles Darwin, corresponded is the main verb, the word that tells what happens in the sentence. Ask who corresponded, and the answer is the subject, the person who corresponded: the man identified by the whole opening. The words botanist and Himalayan explorer describe the same man, so both descriptions and the finished name belong to one subject. The blank falls between that complete subject and its verb.
- Step 3
Check the shortened sentence
Shrink the whole description and name to he, so the start becomes he corresponded extensively with Charles Darwin. Would a comma go between he and the verb? No, because no mark goes directly between a subject and its verb, even when the full subject is long. The version with a comma splits those parts, so use Hooker, which completes the name without adding a mark. Choice A.