Dunn Et Al

Multiple Choice

Dunn et al. (2005) conducted an experiment of the relationship between exercise and depression. Participants were randomly assigned to either a low or a high intensity workout regime. Some were assigned to work out 3 days a week, while other participants worked out 5 days a week. Identify the independent variable(s) in this study.

A) Energy condition
B) Participants' interest in exercise and health conditions
C) Amount of exercise and frequency of exercise
D) Depression