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.

c. archbishop desmond tutu promoted the acknowledgement of the rights of black africans and expose human rights abuses.

d. leader haile selassie modernized african society through the institution of progressive social, economic, and educational reforms.