Final answer:
The correct answer is 'structure' as it refers to the composition and organization of the community, constituted by health agencies, schools, fire departments, and governmental bodies. Option c is correct.
Step-by-step explanation:
Health agencies, schools, fire departments, and governmental bodies are examples of the structure of a community. These entities form the organizational framework that allows a community to function effectively. Their roles and responsibilities are interconnected and create a stable environment for citizens to live, work, and interact.
The term demography relates to the study of human populations, including their size, distribution, and structure, and understanding the dynamic nature of population changes over time due to various factors like birth rates, death rates, and life expectancies.
However, in the context of this question, 'structure' is the most suitable answer as it pertains to the composition and organization of a community.