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

Multiple Choice

Prior to entering a restaurant, Amy starts to shake, hyperventilate, and feel lightheaded. She is too terrified to enter the restaurant. She turns around immediately and catches the first taxi back home. What is this behaviour most consistent with?

A) depression
B) Parkinson's disease
C) anxiety disorders
D) Huntington's disease