Exchange, cooperation, and competition are all examples of
a. complex interests.
b. norms of reciprocity.
c. social processes.
d. conflict resolution.

These are all things that people do together, processes that happen when people interact with each other, so the correct answer is C. social processes.
They can be based on their interests, but don't have to be and they can involve conflicts, but again, not necessarily. 

6, 4, 5, 1 are true. the others are false.