medium · LSAT Logical Reasoning
Participants in a high-intensity cardio program were expected to lose weight over a three-month period. Instead, data showed that the average participant actually gained three pounds, even though their body fat percentage decreased significantly.
Which one of the following, if true, most helps to resolve the apparent discrepancy?
- Body fat percentage is typically measured with a tool that has a margin of error of plus or minus 2 percent.
- Many participants reported feeling much hungrier after their workouts and increased their daily caloric intake.
- The program was so rigorous that nearly 20 percent of the original participants dropped out before the study was finished.
- The high-intensity training built significant muscle mass, which is denser and weighs more than the fat that was lost.
- Participants weighed themselves at different times of day over the course of the study.
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