Logical ReasoningDifficulty: Medium

PT134 S2 Q10 Explanation

In order to reduce traffic

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

TopicsNecessary Assumption

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Stimulus

In order to reduce traffic congestion and raise revenue for the city, the mayor plans to implement a charge of $10 per day for driving in the downtown area. Payment of this charge will be enforced using a highly sophisticated system that employs digital cameras and computerized automobile registration. This system will mayor's plan is first implemented, payment of the charge will not be effectively enforced.

What this question is testing

Necessary Assumption

Your task

Find the assumption the argument requires in order for its conclusion to hold.

Common trap

Answers that would help the argument but aren't strictly required (sufficient, not necessary).

Winning move

Negate each choice — the right one breaks the argument when negated.

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

The question
10.

Which one of the following is an assumption on which the argument depends for its conclusion to

Answer choices

  1. Correct75% picked this

    The mayor's plan to charge for driving downtown will be implemented before the end

    Why this is right

    This ensures that the plan will PI → BENY be implemented before the system is in place.

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

  2. Out of Scope3% picked this

    The city will incur a budget deficit if it does not receive the revenue it expects to raise from

    The conclusion is about whether evasion will occur when the plan is implemented and not about a budget deficit.

  3. Out of Scope - Opinion14% picked this

    The plan to charge for driving downtown should be implemented as soon as payment of the charge

    What should or should not be the case is not relevant to what is the case.

  4. Irrelevant Comparison2% picked this

    Raising revenue is a more important consideration for the city than is

    The relative importance of these considerations is irrelevant to the argument, since the argument is about what will happen and not why it will happen.

  5. Too Strong6% picked this

    A daily charge for driving downtown is the most effective way to

    The plan need not be the most effective way to accomplish the mayor’s goals for the plan to be effective.

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