Which agency is the primary U.S. federal agency for biomedical and public health research, part of the Department of Health and Human Services, and the world's largest public funder of medical research?

• A. Centers for Disease Control and Prevention (CDC)
• B. National Institutes of Health (NIH)
• C. Environmental Protection Agency (EPA)
• D. Food and Drug Administration (FDA)

Answer: (D)

The main concept here is identifying which U.S. agency leads biomedical and public health research and funds the majority of that work. The National Institutes of Health is the premier federal entity for biomedical and public health research. It sits within the Department of Health and Human Services and is widely recognized as the world’s largest public funder of medical research, supporting a vast array of basic, translational, and clinical studies through grants to scientists at universities, hospitals, and other institutions, as well as conducting its own intramural research.

The other agencies have important roles too, but not as the primary funders of medical research. The FDA focuses on regulation and safety oversight of foods, drugs, and medical devices, rather than funding most research. The CDC emphasizes public health surveillance and disease prevention, while the EPA concentrates on environmental protection and related health effects. Thus, NIH best fits the description of the agency described.