A researcher is investigating the effects of different amounts of exercise on weight. Some participants are assigned to a group that exercises 50 minutes a day, while others are assigned to a group that does no exercise each day. What are the independent and dependent variables in this experiment?
A. The dependent variable is weight; the independent variable is amount of exercise.
B. The independent variable is calories consumed; the dependent variable is diet.
C. The independent variable is weight; the dependent variable is calories consumed.
D. The dependent variable is amount of exercise; the independent variable is calories consumed.
Answer: A
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