Stuart Has a Rather Unusual Fear _____________

Multiple Choice

Stuart has a rather unusual fear _____________. He is afraid of public speaking, but only when he has to make speeches on the weekend. He is a professor and has no trouble speaking in front of large groups of students, and he has made effective presentations at conferences, as long as he presents on a weekday. The specificity of Stuart's fear most clearly demonstrates the process of _____________.

A) escape conditioning
B) avoidance conditioning
C) stimulus generalization
D) discrimination