9 original Central Ideas and Details questions, easiest first. The main idea of a passage, or a detail it actually states. Answer them all, then submit once to see every answer explained.
Interviews conducted with retired commercial airline mechanics revealed that most did not cite physical strain or irregular shift schedules as their primary reason for retiring, but rather a desire to pursue hands-on restoration work on vintage aircraft as a personal hobby rather than a job.
Which choice best states the main idea of the text?
D — A desire to pursue vintage aircraft restoration as a hobby was the most commonly cited reason for retirement.. The passage explicitly rules out physical strain and shift schedules as primary causes and instead identifies 'a desire to pursue hands-on restoration work' as a hobby as the reason—matching choice D precisely.
Contrary to the common assumption that ancient Polynesian voyaging canoes relied entirely on favorable winds to reach distant islands, historical accounts and modern experimental voyages show that skilled navigators could sail effectively into headwinds using a zigzagging technique similar to tacking.
Which choice best states the main idea of the text?
D — Polynesian navigators had developed techniques allowing canoes to sail effectively against headwinds.. The passage directly challenges the assumption of wind-only sailing, citing evidence that navigators could zigzag against headwinds—choice D captures this central, counterintuitive claim accurately.
While gift-giving is often assumed to strengthen relationships regardless of the gift's cost, several studies have found that thoughtfulness—how well a gift reflects the recipient's specific interests—predicts recipient satisfaction far more strongly than the gift's monetary value does.
Which choice best states the main idea of the text?
D — The thoughtfulness behind a gift matters more to recipients than how much it costs.. The passage states thoughtfulness 'predicts recipient satisfaction far more strongly than' monetary value—the main idea is that thoughtfulness outweighs cost, matching choice D; choice B directly contradicts this.
Interviews conducted with retired professional musicians revealed that most did not cite performance anxiety or physical injury as their primary reason for retiring, but rather a gradual loss of enjoyment that developed after years of touring on a fixed schedule dictated by others.
Which choice best states the main idea of the text?
C — A decline in enjoyment tied to loss of scheduling autonomy was the most commonly cited reason for retirement.. The passage explicitly rules out anxiety and injury as primary causes and instead identifies 'a gradual loss of enjoyment' tied to touring schedules as the reason—matching choice C precisely.
A longitudinal study tracking over two thousand adults found that regularly engaging in unstructured creative hobbies, such as painting or woodworking, predicted greater reported stress resilience in middle age more strongly than income level during the same period did.
Which choice best states the main idea of the text?
C — Engaging in unstructured creative hobbies was found to be a stronger predictor of later stress resilience than income.. The study's finding, stated directly, is that creative hobbies predicted resilience 'more strongly than' income—choice C captures this comparison accurately without overstating it as choice B does.
Traditional wattle-and-daub construction techniques weave flexible branches into a lattice frame, then coat it with a mixture of mud, straw, and animal dung; this method not only uses inexpensive, locally sourced materials but also produces walls with breathable properties that help regulate indoor humidity naturally.
Which choice best states the main idea of the text?
D — Wattle-and-daub construction offers practical advantages in material cost and passive humidity regulation.. The text lists multiple practical benefits (inexpensive local materials, passive humidity regulation) of wattle-and-daub construction, which choice D accurately summarizes; the other choices are either contradicted or unsupported.
Traditional adobe construction techniques use sun-dried mud bricks that provide substantial thermal mass, allowing interior temperatures to stay cool during hot days and retain warmth through cool nights; this passive temperature regulation reduces the need for mechanical heating and cooling in many desert climates.
Which choice best states the main idea of the text?
C — Adobe's thermal mass properties offer a practical, passive alternative to mechanical climate control.. The text describes adobe's thermal mass reducing the need for mechanical climate control specifically in desert climates—choice C accurately summarizes this practical, passive benefit without the overstatements in the other choices.
While wind turbine blade efficiency has roughly tripled over the past two decades, the primary driver of falling offshore wind energy costs has actually been improvements in installation vessel technology, which reduce construction time and cost far more than efficiency gains alone would predict.
Which choice best states the main idea of the text?
A — Installation vessel improvements, more than blade efficiency, have driven down offshore wind energy costs.. The passage explicitly attributes falling costs primarily to installation vessel improvements rather than blade efficiency, directly stating efficiency alone would predict smaller cost drops—matching choice A.
A longitudinal study tracking over a thousand children from kindergarten through high school found that early social skills, such as sharing and cooperating with peers, predicted later academic achievement more strongly than early reading or math scores did.
Which choice best states the main idea of the text?
C — Early social skills were found to be a stronger predictor of later academic achievement than early academic scores.. The study's finding, stated directly, is that social skills predicted later achievement 'more strongly' than early reading or math scores—choice C captures this comparison accurately without overstating it as choice B does.
Score:
Every question above is now marked up: the correct answer is highlighted, any wrong option you picked is flagged, and each explanation is open.
No. Every question here is original, written to the College Board's published Digital SAT Reading & Writing specification for the Central Ideas and Details skill. No retired or copyrighted College Board material appears anywhere on this site.
Central Ideas and Details asks either for the main idea of a short passage or for a specific detail the passage states. Both are answered entirely from the text — nothing is inferred, nothing is brought in from outside — but the main-idea version requires the choice to cover the whole passage rather than one part of it.
For a main-idea question, summarise the passage in one sentence before looking at the choices, then eliminate any choice that is true of only one sentence. For a detail question, find the exact line the question points at and match against it word by word — the correct choice paraphrases it, but it never adds to it.
No, and deliberately so. This drill is 9 Central Ideas and Details questions back to back; a real Reading & Writing module is 27 questions in 32 minutes drawn from all eleven skills. Use a drill to fix one weakness, then take a full module to practice the real thing.
No. The SAT has no penalty for a wrong answer — a blank and a wrong guess both score zero — so answer every question, including the ones you have to guess.