Answer:
Norm of reciprocity
Step-by-step explanation:
According to the norm of reciprocity if a person gives us something then we should repay the person in kind. Our societies are defined by such norms and are responsible for the current structure of society. There are two types of reciprocity
Positive reciprocity
Where a positive deed is rewarded by a positive deed.
Negative reciprocity
Where a negative deed is rewarded by a negative deed.