The answer of this is place
Answer:
The thing they tend to do is to convince themselves that nothing bad has happened
Explanation:
The norm of reciprocity is the well accepted social standard dictating that we should treat other people as they treat us.
The norm of reciprocity dictates that we have to give people the same treatment that we receive from them. This norm states that we have to pay people in kind.
The theory tries to teach that people would want to be nicer to others if they are to be repaid back with benefits for benefits.
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So, the answer is sun grass wildebeest lion.