A Researcher Investigated the Relationship Between Alcohol Intake and Reaction

A researcher investigated the relationship between alcohol intake and reaction time using a driving simulation task. Participants drank either one ounce or three ounces of alcohol. Their reaction time was measured in terms of the speed with which they braked on seeing a red light during the simulated driving task. In this case, the dependent variable in the experiment is the _____.

A) amount of alcohol
B) braking speed
C) red light
D) degree of intoxication

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