Question #6421736Single Choice

Algebra-1

Question

A study divides participants into two groups: one follows a strict low-carb diet, and the other maintains their usual eating habits. After three months, the low-carb group loses an average of 10 pounds, while the control group shows no significant change. Researchers conclude that the low-carb diet causes weight loss.

Which of the following would weaken the conclusion?

Options

Participants in the low-carb group also exercised more than those in the control group.

The study was conducted over three months instead of a full year.

The control group was not told to avoid certain foods, while the low-carb group was.

The results were based on self-reported data, which can sometimes be unreliable.

Answer & Analysis

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