Logical ReasoningDifficulty: Medium

PT11 S2 Q16 Explanation

Body temperature varies over a 24-hour period

A free, expert breakdown of this official LSAT Logical Reasoning question.

TopicsMust be True

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Stimulus

Body temperature varies over a 24-hour period, with a low point roughly between 4 a.m. and 5 a.m. Speed of reaction varies in line with body temperature, such that whenever body temperature is low, speed of reaction is low. If low body temperature caused slow reaction, the speed of reaction should increase to 5 a.m. But the speed of reaction does not increase.

What this question is testing

Must be True

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence gap.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
16.

Which one of the following conclusions can properly be drawn from the

Answer choices

  1. Trap1% picked this

    Low speeds of reaction cause low

  2. Trap8% picked this

    Low speeds of reaction do not cause low

  3. Correct77% picked this

    Low body temperatures do not cause low speeds

    Why this is right

    Answer C is correct.

    Skill tested: Must be True · how this choice captures the argument's function is the move to repeat next time.

  4. Trap11% picked this

    Low body temperatures cause low speeds

  5. Trap2% picked this

    Artificially raising body temperature causes increased speed

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