One Day Melissa Was Trapped Alone in an Elevator for Almost

Multiple Choice

One day Melissa was trapped alone in an elevator for almost 3 hours when the power went out. Now, whenever she gets near an elevator, she freezes up and starts gasping for air as if she cannot breathe. This is an example of:

A) classical conditioning.
B) operant conditioning.
C) fear conditioning.
D) respondent conditioning.