Which of the Following Is Studied by Health Psychologists to Analyze

Which of the following is studied by health psychologists to analyze the health care system and formulate health policy?

A) Classification of occupations that is highly stressful, and can adversely affect people's health.
B) Exercise patterns and dietary interventions that help to promote good habits, and develop a healthy lifestyle.
C) The behavioral and social factors that contribute to health, illness, and dysfunction such as alcohol consumption and smoking.
D) The impact of hospitals and physicians on people's behavior to develop recommendations for improving health care.