Rats Learning a Maze Are Tested After Varying Degrees of Food

Multiple Choice

Rats learning a maze are tested after varying degrees of food deprivation. Some run the maze after 4 hours without food, others after 8 hours, and others after 12 hours deprivation. In this study,

A) food deprivation is the manipulated independent variable
B) the rats are a subject variable
C) the independent variable is a task variable
D) food deprivation is the dependent variable