Answer to Question 1
C
Questioning the evidence is a cognitive restructuring technique that can be effective in changing distorted thinking. Patients with hypochondriasis often ignore any possibilities except those that support their distorted thinking. Learning that headaches, visual disturbances, weakness, and vomiting can have causes other than brain tumors can be helpful.
Answer to Question 2
A
Depression is endemic, meaning it is constantly or regularly found in the population. Epidemiology includes the study of such endemic diseases: their causes, their treatment, and their prevention and control.