How do you choose the conclusion that most logically completes a short passage without adding outside information?
Inferences: drawing the conclusion that follows logically from a short passage, choosing the option that most logically completes the text, and rejecting choices that overreach, contradict, or add unstated information.
A focused answer to the Digital SAT inference skill: identifying the logic of a short passage, choosing the option that most logically completes it or is most strongly supported, and avoiding inferences that overreach or rely on outside knowledge.
Reviewed by: AI editorial process; not yet individually human-reviewed
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What this skill is asking
An inference question asks for the conclusion that follows logically from a short passage. On the Digital SAT, the College Board (Information and Ideas domain) usually phrases it as "Which choice most logically completes the text?" (with a blank at the end of the passage) or "Which choice is most strongly supported by the text?" The skill is to follow the passage's own logic one step to its natural conclusion, choosing the option the text forces without importing anything from outside.
Follow the passage's logic
An inference is not a wild guess and not a restatement; it is the next logical step. The reliable method is to read the passage, name its logical structure, and predict where it is heading before reading the choices.
For a "logically completes" question, the last sentence usually sets up the inference with a connective such as "therefore," "however," or "because," which tells you whether the conclusion should agree with, contrast, or explain what came before.
Safest supported, not most interesting
The correct inference is rarely the boldest or most interesting option. It is the one that stays closest to the text. A bold prediction ("attendance will keep rising forever") goes far beyond a passage that only reports a one-time rise. The SAT rewards the modest, well-supported conclusion.
Stay inside the text
The defining discipline of inference questions is to use only the passage. Outside knowledge, however true, is not evidence here. If a choice requires a fact the passage never states, it is wrong, even if you happen to know it is true. Likewise, beware choices that are almost right but add one unsupported word ("always," "never," "all," "only") that the passage does not justify; those absolute words often mark the overreach trap.
Inference questions build directly on central ideas and command of evidence: you must first understand what the passage says and which details matter, then take exactly one logical step beyond it, no more.
Exam-style practice questions
Practice questions written in the style of College Board exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
Digital SAT R&W (style)1 marksA text states that a desert plant's seeds only germinate after heavy rainfall, which is rare and unpredictable in its habitat. It follows that the plant's seeds must be able to ____. Which choice most logically completes the text? (A) germinate in any conditions (B) remain viable for long periods between rains (C) grow without any water (D) flower within a single day.Show worked answer →
The correct answer is (B).
If germination only happens after rare, unpredictable heavy rain, the seeds must survive the long, unpredictable waits in between, so they must remain viable for long periods. Choice (A) contradicts the text (germination needs heavy rain, not any conditions); (C) contradicts the need for rain; (D) is about flowering speed, which the text never raises. A good inference follows necessarily from the passage without adding new ideas.
Digital SAT R&W (style)1 marksA passage reports that a museum saw attendance rise sharply only after it began offering free entry on Sundays, while its exhibits and hours were unchanged. Which choice is most strongly supported by the text? (A) The exhibits caused the rise in attendance. (B) Free Sunday entry contributed to the rise in attendance. (C) The museum should charge more on weekdays. (D) Attendance will keep rising forever.Show worked answer →
The correct answer is (B).
Attendance rose only after free Sundays began, with exhibits and hours unchanged, so the free entry is the supported explanation for the rise. Choice (A) is contradicted because exhibits did not change; (C) is a recommendation the text does not support; (D) overreaches far beyond the evidence. The supported inference stays close to what the passage establishes.
Related dot points
- Central ideas and details: stating the main point of a short passage in your own words, and finding a specific detail that is explicitly stated or closely paraphrased, without adding outside information.
A focused answer to the Digital SAT Information and Ideas skill of identifying a passage's central idea and locating specific details: forming a short headline for the main point, matching details to the exact lines, and avoiding answers that add information or distort the text.
- Command of evidence (textual): selecting the sentence, detail or finding that most directly supports, illustrates or strengthens a stated claim or hypothesis, and rejecting evidence that is merely related.
A focused answer to the Digital SAT textual command-of-evidence skill: rephrasing the claim, finding the choice that most directly supports or illustrates it, and eliminating evidence that is on-topic but does not actually back the specific claim.
- Reading actively for information: a method for the short passages that finds the claim, the structure and the key detail on a first read, and uses predict-then-match and elimination across all Information and Ideas question types.
A focused answer to reading Digital SAT passages actively for the Information and Ideas domain: a first-read method that pins down the claim, the structure and the key detail, then applies predict-then-match and process of elimination across central ideas, evidence and inference questions.
- Text structure and purpose: identifying a passage's overall organisation, its main rhetorical purpose, and the function a specific underlined sentence performs within the whole text.
A focused answer to the Digital SAT text-structure-and-purpose skill: describing how a short passage is organised, stating its main purpose, and pinning the function of an underlined sentence, by matching the precise verb (introduces, contrasts, illustrates) to what the text actually does.
Sources & how we know this
- Reading and Writing: Content Domains and Skills — College Board (2024)
- Digital SAT Sample Questions — College Board (2024)