An Animal Trainer Is Conditioning an Elephant to Startle at the Sound

Multiple Choice

An animal trainer is conditioning an elephant to startle at the sound of a trombone.Every time she plays the trombone,she then shows the elephant a mouse,which startles the elephant.Eventually,the elephant startles at just the sound of the trombone.However,after playing the trombone 10 more times,without a mouse appearing,the elephant exhibits no response.The lack of a response is an example of:

A) generalization.
B) spontaneous recovery.
C) acquisition.
D) extinction.