An Experimental Study Is Conducted Examining the Relationship Between Drinking

Multiple Choice

An experimental study is conducted examining the relationship between drinking caffeine and reaction time. Participants are given caffeine by the experimenters in different amounts, and then are assessed on various tests of reaction time. In this study, the amount of caffeine that a participant drinks is the

A) random variable.
B) independent variable.
C) dependent variable.
D) control variable.