Answer:
The answer is: Conflict theory.
Step-by-step explanation:
A sociologist is a person who attended university studies in sociology, and trained as a researcher of society, to analyze its structure, its problems and understand the behaviors that occur between groups of people, as well as the causes that originated them.
1.- Functional analysis is the branch of mathematics.
2.- The theory of conflict is one of the great schools of modern sociological theory, it is considered as a development that occurred in reaction to the static of structural functionalism.
3.- Symbolic Interactionism is a theoretical current that arises in sociology, but it quickly moved towards anthropology and psychology.
The answer is: Conflict theory.