Multiple Choice
An experimenter wants to study the relationship between caffeine and reaction time.She assigns participants as follows: Group One receives 50 milligrams of caffeine;Group Two receives 100 milligrams of caffeine;Group Three receives 200 milligrams of caffeine;Group Four receives no caffeine.Twenty minutes later all participants complete the reaction-time test.In this experiment,which group was the control group?
A) Group Four
B) Group Three
C) Group Two
D) Group One
Correct Answer:
Verified
Correct Answer:
Verified
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