Final answer:
Option (B), Fran's symptoms of a racing heart, leg weakness, trembling, and intense fear suggest she is experiencing a panic attack, indicative of Panic Disorder.
Step-by-step explanation:
Based on the symptoms described, such as a racing heart, weakness in the legs, trembling, and the fear of losing one's mind, Fran appears to be experiencing a panic attack, which is a primary characteristic of Panic Disorder. Panic Disorder is characterized by abrupt surges of intense fear or discomfort that reach a peak within minutes and during which time a variety of physical and cognitive symptoms occur.
It is essential to distinguish between a single panic attack and the recurrent, unexpected panic attacks along with worry about attacks or changes in behavior related to the attacks that define Panic Disorder, as per the Diagnostic and Statistical Manual of Mental Disorders (DSM).