If You Were Interested in Determining Whether a Possible Interaction

Multiple Choice

If you were interested in determining whether a possible interaction effect existed between an extraneous variable and the independent variable, you should use what technique to control for the influence of the extraneous variable?

A) Hold the extraneous variable constant
B) Make the extraneous variable into another independent variable and include it in the study
C) Match the participants who will be in the study
D) Counterbalancing