In Terms of the Strategies Behavioral Scientists Use to Control

Multiple Choice

In terms of the strategies behavioral scientists use to control for confounding and disturbance variables,_____ (is) (are) applicable to both confounding and disturbance variables,while _____ can be applied only to confounding variables.

A) random assignment and matching;holding a variable constant
B) holding a variable constant and matching;random assignment
C) holding a variable constant;matching and random assignment
D) matching;holding a variable constant and random assignment