A study of 12 people found no link between a diet and heart disease. The researchers conclude that there is no link at all.

The reasoning is flawed because it

Answer and explanation

Correct answer: B. draws a general conclusion from a sample that is too small to be reliable

  1. Step 1: Twelve people are too few to detect a link. Step 2. The conclusion is far too broad. Answer: it generalizes from a small sample. Why not the others: these are not the flaw.

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