Explanation:

- I.P. Desai (Option 1): A noted sociologist known for his work on social change and community studies but not specifically for dividing Indian kinship into four cultural zones.

- Iravati Karve (Option 2): A renowned anthropologist and sociologist, she indeed divided the study of kinship in India into four cultural zones. She made significant contributions to the understanding of Indian kinship, caste systems, and social structures.

- Leela Dube (Option 3): Known for her work on gender and kinship but not credited with dividing Indian kinship into specific cultural zones.

- S.C. Dube (Option 4): A respected anthropologist focused on rural sociology and development but not primarily associated with the division of kinship into cultural zones.