Explanation:

- The statement 'Marriage is said to be essential for women because that is the only sacrament performed by them' actually belongs to K.M. Kapadia, a well-known Indian sociologist who wrote about Hindu marriage and family.

- P.H. Prabhu wrote on Indian social institutions, but this specific statement is not attributed to him.

- P.V. Kane was a renowned Sanskrit scholar and wrote deeply about Dharmasastra, but he did not specifically state this idea.

- A.S. Altekar specialized in the history of Indian women and Hindu society but isn’t credited for this exact statement.

Correct Answer:

Option:2, K.M. Kapadia