Pederson's Teacher Blows a Whistle When It Is Time for His

Multiple Choice

Pederson's teacher blows a whistle when it is time for his class to come in from recess.Pederson is afraid of being left on the playground alone,so he starts to go inside any time he hears a sound like the teacher's whistle,such as the school bell ringing.Pederson's behavior is an example of

A) second-order conditioning.
B) stimulus discrimination.
C) spontaneous recovery.
D) stimulus generalization.