Multiple Choice
Dr. Jones has individuals run on a treadmill for 0, 15, or 30 minutes and then measures their self-reported mood. In this hypothetical study, the independent variable is the __________.
A) self-reported mood
B) individuals who run for 15 or 30 minutes
C) individuals who run for 0 minutes
D) number of minutes individuals run on the treadmill
Correct Answer:

Verified
Correct Answer:
Verified
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