Epidemiology is defined as the study of distribution and determinants of health-related states or events in specified populations, and the application of this study to control health problems.

• A. True
• B. False
• C. Forensics
• D. Clinical trials

Answer: (A)

Epidemiology is defined by studying how health events are distributed in populations and what determines those patterns, and then using that information to control health problems. Distribution means looking at who is affected, where, and when the health state occurs. Determinants are the factors—biological, behavioral, environmental, social—that influence those patterns. Focusing on specified populations emphasizes group-level understanding rather than just individuals, and the application part highlights using findings to prevent illness, protect health, and guide public health actions. The other choices don’t fit because forensics deals with legal uses of medical knowledge, and clinical trials are a method for testing interventions rather than describing disease patterns and informing population-wide control.