Logical ReasoningDifficulty: Hard

PT137 S3 Q22 Explanation

Consumer advocate: There is no doubt

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

TopicsNecessary Assumption

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Stimulus

Consumer advocate: There is no doubt that the government is responsible for the increased cost of gasoline, because the government's policies have significantly increased consumer demand for fuel, and as a of gasoline has risen steadily.

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
22.

Which one of the following is an assumption required by the consumer

Answer choices

  1. Correct53% picked this

    The government can bear responsibility for that which it

    Why this is right

    First let's clarify the vocab here: If A causes B, and B causes C, then A indirectly causes C and B directly causes C (B is the proximate cause). The author is clearly thinking that the government isn't just responsible for the increasing consumer demand, but also for the further ripple effects of gas prices rising. If we negated this answer it would say, "The government cannot be responsible for something it indirectly causes", which would destroy this argument.

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

  2. Out of Scope: unforeseen12% picked this

    The government is responsible for some unforeseen consequences of

    This is tempting, but we don't actually know whether the rising gas prices were unforeseen or expected. Negating this and getting "the government isn't responsible for unforeseen consequences" wouldn't necessarily weaken the argument, since we don't know whether the rising gas prices was an unforeseen consequence.

  3. Too Strong18% picked this

    Consumer demand for gasoline cannot increase without causing gasoline prices

    Too Strong: X can't go up without Y going up All we know is that in this case, an increase in consumer demand caused an increase in gas prices. The author isn't committed to the idea that this connection always holds. I could say, "Tony popped a balloon behind Angela's head, causing her to spill a drink, which then led Billy to slip on the floor. Thus, Tony is responsible for Billy's slipping." That assignment of blame isn't assuming that "a drink cannot be spilled without someone slipping on the floor".

  4. Out of Scope1% picked this

    The government has an obligation to ensure that demand for fuel does

    Out of Scope: obligation Too Strong: ensure Whether a government has an obligation to do something is a separate issue from whether it's responsible for causing something. I can say that the government's policy caused a scarcity of toilet paper at supermarkets. That doesn't mean I'm assuming that the government has an obligation to ensure that supermarkets do not run low on toilet paper.

  5. Too Strong: tend to Opposite Logic16% picked this

    If the government pursues policies that do not increase the demand for fuel, gasoline prices

    If I say, "Abby is friendly, and she got good customer service at Starbucks", that doesn't mean I'm assuming that "if you're not friendly, you tend to not get good customer service at Starbucks". Maybe most people, friendly or not, get good customer service. Similarly, we heard that "the govt pursued a policy that increased demand, and as a result prices went up". That doesn't allow us to say the author is assuming, "when the govt doesn't pursue such policies, prices tend to remain stable". Maybe the price of gas tends to be volatile, whether or not the government pursues a policy that increases demand. If I say, "Megan is responsible for making Jack laugh", I'm not assuming that "If Megan isn't around, Jack tends to not laugh."

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