Answer:
PERSONALITY , MEDICAL SCHOOL EXAM
Step-by-step explanation:
In this context, Gerry's PERSONALITY is the diathesis and the MEDICAL SCHOOL EXAM is the stressor.
Diathesis is that part in us which are prone to medical disorder, and the stressor is the factors that contributes to the disorder.
Panic attacks in a person is caused by personality disorder, and in this situation, it is triggered by the pressure of the exam.