Explanation:

- Emile Durkheim: Focused on solidarity and collective consciousness, but not specifically on reciprocity and exchange as a base for cooperation.

- E.H. Cooley: Known for concepts like the "looking glass self," but didn't emphasize reciprocity in groups and cooperation.

- Levi Strauss: Famous for structuralism and the idea of exchange (notably kinship systems), but his main emphasis was structural analysis.

- Malinowski: Stressed the importance of reciprocity and exchange (like in his studies of the Kula Ring) for maintaining social ties and cooperation among individuals and groups.