D. The study of a society and its natural environment, would be the closest definition
The normative relationships and patterns of interaction that guide group behavior in particular settings is known as Social Structure .
<h2>What is social structure ?</h2>
Social structure is the patterned social arrangements in society that are both emergent from and determined of the actions of individuals.
Studies of social structure try to explain things like trends in inequality and integration. Sociologists examine institutions, social categories (like age groups) or rates (like crime or birth rates) in the study of these phenomena.
This method, often known as formal sociology, does not make a direct reference to personal choices or social interactions. Because the analysis is too abstract at this level, social structure research is not regarded as a behavioral science.
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It would most likely be to reverse aging for older people, or to look better for younger people, while still being one age.