Explanation:

Let’s break down the options:

- Section 13A: This section deals with judicial separation, not divorce by mutual consent.

- Section 13B: This is the one. It spells out divorce by mutual consent—meaning both parties agree to end the marriage together.

- Section 11: Talks about void marriages (marriages considered null and void from the beginning due to reasons like bigamy or prohibited relationships).

- Section 15: Lays out when divorced people can remarry legally—so, about after divorce, not about mutual consent to get one.

So, the correct answer is Section 13B—divorce by mutual consent under the Hindu Marriage Act, 1955.