Karl Marx was the leading theorist in the development of socialism.
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The correct answer is functionalist perspective
The importance of functionalist theory is to explain the functions developed by the mass communications system, unlike the others it does not intend to study the effects, but the functions developed by mass communications in society.
An anthropological researcher in the functionalist perspective, must observe every detail of the studied culture, however simple it may seem, for example, how a community feeds or how they drink water, these details can lead to the construction of the history of that place and the community that lives there.
The one that is not a function of the department of Agriculture is : A. Stabilize farm prices
Stabilizing price fall as the duty of the Central Government, not the department of Agriculture
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