Answer:
b. conflict theory.
Explanation:
Conflict theory: In sociology, the term "conflict theory" was introduced by Karl Marx, and is described as a theory that is based on the idea that a specific society is in a state of "perpetual conflict" due to the competition associated with the limited resources. The conflict theory holds the idea that social order is being maintained via power and domination instead of conformity and consensus.
Example: It can be utilized for looking at revolutions, wars, forms of injustice, violence, & discrimination by describing that there's a "natural disparity in a particular society that leads to developing these problems.
In the question above, "the politician’s understanding of class corresponds to conflict theory".