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    Reading and Writing · Information and Ideas

    Inferences on the Digital SAT

    Inference questions on the Digital SAT usually end with a blank and the prompt "Which choice most logically completes the text?" You get a short passage, and your job is to supply the conclusion the passage builds toward but never quite states. A few instead ask which claim is "most strongly supported by the text," but the task is the same: finish the thought the evidence points to.

    The two most important words are "most logically" and "most strongly supported." The right answer is not the most interesting possibility or the one that sounds most like real life. It is the claim that has to be true if everything in the passage is true. Wrong answers reach past the evidence, sneak in a fact the passage never gave you, or run in the opposite direction from a contrast word you skimmed over.

    You'll meet these in the Information and Ideas part of both modules, often attached to science, history, or social studies passages that lay out a small puzzle. Students who miss them usually understood the passage fine and simply chose a conclusion that was plausible rather than forced. The fix is to hold every option to a strict standard: the passage must guarantee it, not merely allow it.

    New to the Digital SAT? Start with how the test is structured and scored.

    What the SAT actually tests

    • Drawing a conclusion that follows logically from the information given in a short passage
    • Completing a text with the choice the passage's evidence most strongly supports
    • Separating a conclusion the text guarantees from one that is merely possible or plausible
    • Using logical relationships in the passage, such as contrast, cause, or condition, to determine what must follow
    • Recognizing when a choice overreaches beyond the evidence or depends on an outside assumption the passage never supplies

    Strategies that work

    Read to the blank before you infer

    Most of these end with a blank, so finish the whole passage first and get clear on where the logic is heading. Pay special attention to the sentence right before the blank and to any turn signal like but, however, or yet, which tells you the conclusion should reverse direction rather than continue it.

    Demand "must be true," not "could be true"

    Test each option with one question: if every sentence in the passage is true, is this choice forced to be true as well? If the option merely could be true, or is true only with an extra assumption, it fails. The correct answer is the one the passage leaves you no way to avoid.

    Follow the logical hinge

    Locate the connective the passage turns on, such as because, therefore, although, or despite. The inference almost always completes the relationship that hinge sets up. If the passage stacks a surprising fact against an expectation, the conclusion usually explains or resolves that tension.

    Let the transition word set your target

    The word right before the blank usually tells you what kind of piece you need. After because or since, the blank is a supporting fact, the why. After therefore, suggests that, or imply that, the blank is the conclusion, the so what. Decide which one you are hunting for before you read the choices.

    Reject choices that need outside information

    A wrong option often sounds smart because it draws on something you happen to know about the topic. If completing the passage with a choice requires a fact the text never states, eliminate it. Everything you need is on the screen, and the answer never depends on your background knowledge.

    Watch for a tension the blank has to resolve

    When a passage turns on but, however, or yet, it is usually setting up two facts that pull against each other, and the blank has to reconcile them. Name both sides first, then pick the choice that fits both at once instead of only one.

    Mistakes to avoid

    • Choosing the most dramatic or interesting possibility instead of the one the passage forces
    • Importing real-world knowledge to justify a choice the text does not support on its own
    • Missing a contrast word and completing the passage in the same direction when the logic should turn
    • Picking a choice that is too strong, using words like all, never, or proves, when the passage supports only a hedged claim
    • Treating something the passage merely mentions as if the passage had established it
    Sage, the SAT Prep Quest Reading & Writing coach

    Practice with Sage, your Reading & Writing coach

    Answer right here and Sage walks you through it, just like in a drill. Difficulty labels are relative within this skill.

    Question 1Easy

    Unlike most fish, the mudskipper spends much of its time out of the water, using its muscular front fins to pull itself across coastal mudflats in search of food. Its skin, however, can absorb oxygen only while it stays moist, and the fish returns again and again to shallow pools to wet itself. It follows that the mudskipper ______.

    Which choice most logically completes the text?

    Pick an answer to get instant coaching from Sage.

    Question 2Medium

    When archaeologists excavated a 3,000-year-old settlement high in the Andes, they expected the residents to have relied on locally grown potatoes and quinoa. Chemical analysis of pottery residue did reveal both crops, but it also revealed traces of maize, a plant that could not have been cultivated at the settlement's cold elevation. The nearest land warm enough to grow maize lay several days' travel down the mountains. These findings therefore imply that the settlement's residents ______.

    Which choice most logically completes the text?

    Pick an answer to get instant coaching from Sage.

    Question 3Hard

    Economists studying the spread of household electricity in the early twentieth century have noted a puzzle. In many regions, families paid to connect their homes to the electrical grid years before they owned more than a single light bulb's worth of appliances. Wiring a home was expensive, and for a long time the only regular use most families made of the connection was lighting, which cheap oil lamps had already supplied. Yet the number of new connections kept climbing. This pattern suggests that these families valued a grid connection ______.

    Which choice most logically completes the text?

    Pick an answer to get instant coaching from Sage.

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    The rest of Information and Ideas

    Inferences is one of 3 skills in Information and Ideas. The ideas build on each other, so it pays to learn them as a set rather than in isolation. See how Information and Ideas fits together.

    Other Reading and Writing skills to explore

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    Inferences: SAT Practice & Strategies | SAT Prep Quest