Demography deals with all except –
**Core Concept**
Demography is the statistical study of populations, focusing on size, structure, and dynamics. It involves analyzing demographic variables such as birth rates, death rates, age distribution, and migration patterns to understand population trends and changes.
**Why the Correct Answer is Right**
Demography primarily deals with the numerical and structural aspects of populations, including fertility rates, mortality rates, and population growth. It also examines population distribution, density, and composition. Demography is essential in understanding the impact of population changes on various social, economic, and environmental factors.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is too vague and does not directly relate to the core concepts of demography.
**Option B:** This option is incorrect because, while genetics may influence population characteristics, it is not a primary focus of demography.
**Option C:** This option is incorrect because epidemiology is a distinct field that studies the distribution and determinants of health-related events, diseases, or health-related characteristics among populations.
**Clinical Pearl / High-Yield Fact**
Demographers use the concept of "dependency ratio" to describe the proportion of a population that is either too young or too old to work, which can have significant implications for economic development and social welfare programs.
**Correct Answer: D. Epidemiology. Epidemiology.**