Answer:
C,)The reciprocity norm
Explanation:
From the question, we are informed about Sharon who is upset with her secretary. Though everyone in the office agreed not to give Christmas presents this year, Sharon's secretary gave her an expensive bottle of perfume. In this case, the best yet that identifies the source of Sharon's feelings is reciprocity norm.
Reciprocity norm can be regarded as rule of human interaction which stressed that action of a person needs to be reciprocated by another people. In simple term, reciprocity norm explain that when a particular person is been given a gift by another, the gift must be related by the person, this gift could take different number of forms. Reciprocity can be explained better as ways and how particular positive actions generate more positive actions, in the same way that negative actions generate or give room for more negative actions
