Answer:
The correct answer is b) the reciprocity norm.
Step-by-step explanation:
Society is governed by social norms, which are rules that aim to help coexistence between groups of people. Among these social norms, we can also find the norm of reciprocity.
It is known as the norm of reciprocity to situations where people expect their actions to correspond in the same way they did; this norm is the gratitude that an individual can have towards a person who has done him a favor or the right action. For example, in the case of Mrs. Greenway, she acted under the norm of reciprocity, since she felt the obligation to correspond with an action similar to the invitation that her neighbor had made.
I hope this information can help you.