Practice mode Critical Reasoning

Argument: Online classes are as effective as classroom teaching, since online students in the course earned the same average marks as classroom students. Which of the following, if true, most weakens the argument?

Correct answer C. The online students sat an easier version of the examination

Explanation

Equal marks on an easier exam suggest the online students actually learnt less, so the comparison is unfair. The same textbook makes the groups more alike, which does not weaken anything.

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Answer checked 11 October 2026 How we write and check questions

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Argument: Online classes are as effective as classroom teaching, since online students in the course earned the same average marks as classroom students. Which of the following, if true, most weakens the argument?

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Argument: Online classes are as effective as classroom teaching, since online students in the course earned the same average marks as classroom students. Which of the following, if true, most weakens the argument?

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