Logical Reasoning Quiz
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STRENGTHEN & WEAKEN
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A health blogger argues: In a small group of friends, those who started drinking a glass of water before each meal reported losing more weight over two months than those who did not. Drinking water can reduce hunger, so it makes sense that they ate less. Since eating less leads to weight loss, the water-before-meals habit must be an effective weight-loss method. Therefore, most people who adopt this habit will lose weight, even without making any other changes.
Which one of the following, if true, most seriously weakens the argument?
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