Helen Decides to Study the Effects of Alcohol on Driving

Multiple Choice

Helen decides to study the effects of alcohol on driving ability. She selects 200 college students and randomly divides them into two groups of 100 students each. Subjects in
Group "A" drive a car through an obstacle course while remaining sober. Subjects in
Group "B" also drive through the obstacle course, but they are given an ounce of
Whiskey before each attempt at driving the course. As expected, the driving ability of
Subjects in group "B" steadily deteriorates as they consume more alcohol. In Helen's
Study, the subjects' driving ability is the ______.

A) independent variable
B) codependent variable
C) dependent variable
D) reciprocal variable