Logical ReasoningDifficulty: Medium

PT145 S4 Q17 Explanation

Principle: The government should

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

TopicsPrinciple-Strengthen

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Stimulus

Principle: The government should not prevent someone from expressing a true belief unless expressing it would people generally.

Application: The government was wrong to prevent Calista from publicly expressing her belief that there is evidence that cancer rates have increased slightly over the last two decades and that to excessive use of cell phones.

What this question is testing

Principle-Strengthen

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
17.

Which one of the following, if true, would most help to justify the above application

Answer choices

  1. Doesn't Establish Either1% picked this

    The government has conducted extensive research to determine whether there is any causal link between use of

    Great, they've conducted research .... what were the results!?! This has no impact because it doesn't help us know whether it's true/false that cell phones are causing cancer. And it says nothing about whether expressing the belief would cause harm.

  2. Correct78% picked this

    Several studies have found evidence that use of cell phones has been partially responsible for the increase in cancer rates over the last two

    Why this is right

    This establishes both "true belief" (several studies have found evidence that cell phones partly caused the uptick in cancer) and "won't cause harm generally" (it would benefit people for her to express this belief).

    Skill tested: Principle-Strengthen · how this choice captures the argument's function is the move to repeat next time.

  3. Only One Criterion9% picked this

    Calista firmly believes that knowing about the causes of the increase in cancer rates over the last two decades

    This doesn't cover whether it's a true belief that "cell phones are causing the increase in cancer". It relates to whether expressing the belief would harm people, but it's stated as her belief rather than as a fact we can trust.

  4. Doesn't Establish Either10% picked this

    Unless there is strong evidence of a link between use of a product and disease, the suggestion that use of the product causes

    This has no impact because it doesn't help us know whether it's true/false that cell phones are causing cancer. And it says nothing about whether expressing the belief would cause harm.

  5. Doesn't Establish Either2% picked this

    Most people would reduce their use of cell phones if they were convinced that they were using them enough to increase

    This has no impact because it doesn't help us know whether it's true/false that cell phones are causing cancer. And it says nothing about whether expressing the belief would cause harm.

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