Branch of medical science concerned with the incidence, distribution, and control of diseases that affect large numbers of people?

• A. Bioethics
• B. Patient's Bill of Rights
• C. American Red Cross
• D. Epidemiology

Answer: (D)

Epidemiology is the study of how diseases affect large groups of people by looking at how often they occur (incidence), where and when they appear (distribution), and what factors influence their spread and prevention (control). This question highlights incidence, distribution, and control across populations, which is exactly what epidemiology does.

Bioethics deals with moral and ethical issues in medicine. The Patient's Bill of Rights outlines patient rights and protections. The American Red Cross is a humanitarian organization focused on disaster relief, blood services, and related aid. Epidemiology uniquely connects data on who gets sick, where and when they get sick, and how to prevent or reduce illness in communities, such as tracking flu activity by region and age group and evaluating vaccination impact.