Why Do Drive-Reduction Approaches Fail to Offer a Complete Account

Multiple Choice

Why do drive-reduction approaches fail to offer a complete account of human motivation?

A) Homeostasis does not accurately describe the mechanism by which primary drives operate.
B) Drive-reduction approaches offer much better explanations of behaviors motivated by secondary drives than of behaviors motivated by primary drives.
C) People are sometimes motivated to increase rather than decrease their level of stimulation.
D) Drive-reduction approaches are vague about what,or even how many,primary drives exist.