Text Structure: naming what a sentence says instead of what it does
Function questions offer a choice that accurately restates the sentence. It is accurate, and it is wrong.
Why it happens
Restating is easier than analyzing, and the restating choice is verifiable word by word against the text — which feels like exactly the kind of evidence the SAT rewards. Function is a relationship to the rest of the paragraph, which requires reading past the underlined sentence.
See the trap
Previous sentence: "The survey's early figures proved unreliable." Underlined sentence: "Estimates of the colony's size were revised downward in 1994 and again in 1997."
✗ The trap: "It describes two revisions to the early estimates." — true, and merely a paraphrase.
✓ The fix: "It supplies the evidence for the claim made in the previous sentence." That relationship is the sentence's job, and it is only visible if you read the sentence before it.
How to actually fix it
- Read the sentence before and after the underlined one.
- Ask why the author put this sentence here, not what it says.
- Reject any choice that would still be true if you deleted the surrounding paragraph.
Made this mistake on a real question?
Practice Craft and Structure questions here. Miss one and it is logged with the exact error, then brought back until you beat it.
Practice Craft and Structure →FAQ
How do I recognize a function question?
The stem uses words like function, role, purpose, or "serves to". If it says "main idea" or "best summarizes", content is what is being asked for.
How do I stop repeating this mistake?
Reading the explanation isn't enough — your brain needs to beat the trap on a fresh question. Practice the skill in the kaoshen.co question bank: miss one and it is logged with the exact error, then brought back to you three days later and again after fourteen.