A Research Team Found That Men Who Did Not Exercise

question 74

Multiple Choice

A research team found that men who did not exercise had a higher rate of heart disease. Which of the following explanations illustrates the third-variable problem?

• A)Heart disease might make it more difficult for men to exercise.
• B)The relationship between exercise and heart disease might not be causal.
• C)Including men who smoke in the study might erase the relationship between exercise and heart disease.
• D)Smoking might cause both heart disease and reluctance to exercise.

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