Multiple Choice
A researcher conducts a study to determine whether or not taking Vitamin C prevents colds. What is the explanatory variable in this study?
A) Whether or not one takes Vitamin C.
B) Whether or not one gets colds.
C) Whether or not one is a participant in the study.
D) Whether or not one knows which treatment one is taking.
Correct Answer:
Verified
Correct Answer:
Verified
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