Studies find that people who regularly eat breakfast weigh less than people who do not. It follows that eating breakfast helps people to control their weight.
Which one of the following, if true, most seriously weakens the argument?
Answer and explanation
Correct answer: A. People who are already trying to control their weight most often eat breakfast regularly
- Step 1: The argument assumes breakfast causes lower weight. Step 2. The correct option reverses the cause: weight control leads to breakfast. Answer: weight-conscious people eat breakfast. Why not the others: these do not reverse the causal direction.
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