Answer:
a.maximizing rewards and minimizing costs.
Step-by-step explanation:
Social exchange theory was proposed by a famous sociologist named George Homans and is described as the tendency of individuals to weigh the risk of social relationship and potential benefits. In other words, the theory says that an individual's social behavior is often considered as the consequence of an 'exchange process' and the purpose associated with exchange is to minimize costs and maximize benefits.
The correct answer for the question is a.