Logical ReasoningDifficulty: Hard

PT144 S3 Q19 Explanation

Juarez thinks that

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

TopicsParallel

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Stimulus

Juarez thinks that the sales proposal will be rejected by the committee if it is not rewritten before they see it. Juarez’s opinion is very reliable on such matters. Thus, since the proposal probably be rejected by the committee.

What this question is testing

Parallel

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
19.

The reasoning in which one of the following arguments is most similar to the reasoning in

Answer choices

  1. Evidence17% picked this

    A leading science journal has concluded that data provided by the manufacturer of a certain controversial new medication are accurate. The journal is generally

    A leading science journal A has concluded that data provided by the manufacturer of a certain controversial new medication are accurate. The journal is generally reliable on such matters. If the company’s data A → S are accurate, the medication must be safe. Thus, the medication is S probably safe. The “if/then” rule should be the premise that is believed to be true. Instead the belief is the first premise that the data provided by the manufacturer are accurate.

  2. Wrong Structure3% picked this

    The data from the manufacturer of a controversial new medication prove that the medication is safe, because a leading science journal has concluded that

    The leading science journal ~PS → ~CS would not have done so [concluded that the medication is safe], had the manufacturer’s data not proven that the medication is safe. A leading science journal CS has concluded that the medication is safe. The data from the PS manufacturer of a controversial new medication prove that the medication is safe. The “if/then” rule should be the premise that is believed to be true. Instead the belief is the first premise that the data provided by the manufacturer are accurate.

  3. Correct66% picked this

    A leading science journal states that a certain controversial new medication is safe if the data provided by the company that developed the drug

    Why this is right

    A leading science journal A → S states that a certain controversial new medication is safe if the data provided by the company that developed the drug are accurate. The science journal is rarely wrong about such matters. The company’s data are A accurate. Thus, the medication is S probably safe. This argument relies on a conditional rule that a science journal believes to be true. It supports the rule by testifying to the credibility of the science journal. Next, it asserts the sufficient condition of the rule is true. Finally, it concludes that the necessary condition is therefore likely to be true.

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

  4. Wrong Structure10% picked this

    A leading science journal states that the data provided by the manufacturer of a controversial new medication are probably accurate and that if they

    If they [the manufacturer’s A → S data] are accurate, the medication is safe. The science journal is fairly reliable on such matters. A leading science journal A states that the data provided by the manufacturer of a controversial new medication are probably accurate. Thus, the manufacturer’s A data are probably accurate. The “if/then” rule should be the premise that is believed to be true. Instead the belief is the third premise that the data provided by the manufacturer are probably accurate

  5. Wrong Structure5% picked this

    The data from the manufacturer of a controversial new medication are probably accurate, because a leading science journal has published the data and has

    A leading science journal has published the data and has concluded that the data are probably accurate. Moreover, the journal is fairly reliable on such matters. The data from the manufacturer of a controversial new medication are probably accurate. This argument does not include an “if/then” statement.

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