One of the most consistent findings in the study of family social interactions involves the social exchange of cooperation and conflict, called . A. geriatric distress B. couple struggle C. reciprocity D. social correlation

Reciprocity

Explanation:

Reciprocity is defined as the exchange of things for mutual benefit, granted by a group to another. It is an example of reciprocity principle at work, it's one of the laws of social psychology, it says we pay back what we received from others, i.e paying back favours.

abraham lincoln issued the preliminary emancipation proclamation on september 22nd, 1862. it stipulated that if the southern states did not cease their rebellion by january 1st, 1863, then proclamation would go into effect.