Logical ReasoningDifficulty: Hard

PT109 S4 Q13 Explanation

Politician: The bill that makes

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

TopicsSufficient Assumption

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Stimulus

Politician: The bill that makes using car phones while driving illegal should be adopted. My support of this bill is motivated by a concern for public safety. Using a car phone seriously distracts the driver, which in turn poses a threat to safe driving. People while driving if it were illegal to do so.

What this question is testing

Sufficient Assumption

Your task

Find the assumption that, if added, guarantees the conclusion follows.

Common trap

Answers that only partly bridge the gap, leaving the conclusion unproven.

Winning move

Identify the new term in the conclusion and pick the choice that links it to the evidence.

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

The question
13.

The argument’s main conclusion follows logically if which one of the following

Answer choices

  1. Unrelated to Goal15% picked this

    The more attention one pays to driving, the safer a driver

    Since this doesn't contain the language "should be adopted" it won't allow us to logically derive the wording, "Therefore, should be adopted".

  2. Unrelated to Goal16% picked this

    The only way to reduce the threat to public safety posed by car phones

    Since this doesn't contain the language "should be adopted" it won't allow us to logically derive the wording, "Therefore, should be adopted". It definitely feels closer than (A), because if legislation is our only way, then we should adopt some legislation, right? Yes, but this is Sufficient Assumption. We're not being asked to fill in the blanks with common sense. We would need to spell out even that idea I just uttered, that "if legislation is our only way, then we should take that way". An additional problem is that this answer would only strengthen the idea that "we should adopt some legislation". It still doesn't give us a mechanism to argue for this bill.

  3. Unrelated to Goal6% picked this

    Some distractions interfere with one’s ability to safely operate

    Weak wording like "some" will be wrong on Sufficient Assumption 99% of the time, since we need an answer to powerfully prove the conclusion in airtight fashion. Since this doesn't contain the language "should be adopted" it won't allow us to logically derive the wording, "Therefore, should be adopted".

  4. Correct61% picked this

    Any proposed law that would reduce a threat to public safety

    Why this is right

    This is actually the only eligible answer choice we're offered, since it's the only one to provide us with the wording we need in the conclusion: should be adopted. Does this rule apply to the bill being considered? Would this bill that criminalizes using your phone while driving reduce a threat to public safety? Sure, if using your phone while driving is illegal, it will deter people from doing so, and doing so seriously distracts the driver, which poses a threat to safe driving. Since this answer choice applies to the proposed bill we're talking about, it allows us to logically conclude that this proposed bill should be adopted.

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

  5. Unrelated to Goal1% picked this

    Car phone use by passengers does not distract the driver of

    Since this doesn't contain the language "should be adopted" it won't allow us to logically derive the wording, "Therefore, should be adopted".

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