Karl marx argued that all parts of society have a function in the overall social order: true or false

That statement is false

This argument was most likely made by Functionalism supporters, such as a well known sociologist name emile durkheim . Karl Marx was a supporter of communism ideology and argued for an Utopian society that  should have no hierarchical order and basically similar functions.

so they can defeat there oppenent

c. women being denied the type of education men received