Practice mode Critical Reasoning

Argument: “No one has proved that this new teaching method fails, so it must be effective.” Which best describes the flaw in this reasoning?

Correct answer C. It treats the lack of proof that something is false as proof that it is true

Explanation

The absence of evidence against the method does not show that it works. Effectiveness has to be shown by positive evidence, not assumed because no one has disproved it.

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Answer checked 11 October 2026 How we write and check questions

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Argument: “No one has proved that this new teaching method fails, so it must be effective.” Which best describes the flaw in this reasoning?

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Argument: “No one has proved that this new teaching method fails, so it must be effective.” Which best describes the flaw in this reasoning?

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