Darcy is sitting at her desk in her office one day when, without warning, her heart begins racing rapidly, she starts sweating profusely, and she is gripped with a terrifying fear that she is about to go crazy. Nothing she is doing seems to have caused such an episode. Her symptoms most resemble
a. a phobic disorder.
b. a panic attack.
c. post-traumatic stress.
d. a compulsion
Answer: b