In order to assess whether sense of humor is affected by sexual stimulation, researchers exposed married couples to either sexually stimulating or to sexually nonstimulating movie scenes prior to watching a comedy skit. In this research, the independent variable consisted of:

A. Reactions to the comedy skit

B. Level of sexual stimulation

C. Marital status

D. Sense of humor

B. Level of sexual stimulation

Explanation:

In an experiment which determines the relation between two variables the variable which changes with respect to another variable is known as the dependent variable.

The variable which changes independently but affects the other variable is called independent variable.

Here, the level of sexual stimulation is the independent variable and the sense of humor is the dependent variable.