Logical ReasoningDifficulty: Easy

PT138 S2 Q1 Explanation

Technician: Laboratory mice that

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

TopicsMust be True

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Stimulus

Technician: Laboratory mice that are used for research aimed at improving human health are usually kept in small cages. Such an environment is neither normal nor healthy for mice. Moreover, the reliability of research using animals is an environment that is normal for them.

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
1.

Which one of the following can be properly inferred from the

Answer choices

  1. Speculation0% picked this

    The conditions under which laboratory mice are kept are not likely to change in

    The statements do not include anything about the future.

  2. Negation / Out of scope7% picked this

    If laboratory mice were kept under better conditions, it would be appropriate to use them for research aimed

    This suggests that if ~SC ? ~RR? the cages were not small, then the research would be reliable. But it also suggests that keeping the mice in cages would be appropriate. This includes a moral statement about which the information does not say anything.

  3. Correct91% picked this

    Research using laboratory mice that is aimed at improving human health is compromised by the conditions under which

    Why this is right

    The reliability of the IHH ? RR? research aimed at improving human health is diminished by keeping mice in small cages.

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

  4. Speculation0% picked this

    Those who conduct research aimed at improving human health will develop

    This might solve the problem that the current technique provides results with reduced reliability, but there is no reason to believe that this is necessarily going to occur.

  5. Negation1% picked this

    Laboratory mice that are used for research that is not directly related to human health are not usually

    This negates the first statement. ~IHH ? ~SC

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