Prior to Entering a Restaurant, Amy Starts to Shake, Hyperventilate

Multiple Choice

Prior to entering a restaurant, Amy starts to shake, hyperventilate, and feel light-headed. She is too terrified to enter the restaurant. She turns around immediately and catches the first taxi back home. This behavior is MOST consistent with:

A) depression.
B) Parkinson's disease.
C) an anxiety disorder.
D) Huntington's disease.