The Hindu Marriage Act, 1955 recognizes the following theories of divorce :

The Hindu Marriage Act, 1955 recognises the fault theory (Section 13(1)), the breakdown theory in limited form (Section 13(1A)), divorce by mutual consent (Section 13B) and customary divorce saved by Section 29(2), so the answer is "Fault, Breakdown of Marriage, Mutual Consent and Customary"; it does not recognise irretrievable breakdown as a ground, so "Fault, Irretrievable Breakdown of Marriage and Mutual Consent" is wrong.