81.
The answer is: C
Explanation
The correct option is C: Order 22.
This order deals with the death, marriage and insolvency of parties in a civil suit. It specifies the procedure to be followed when a party dies, marries or becomes insolvent during the pendency of the suit. It also provides for the substitution of the legal representatives of the deceased party, the effect of abatement and revival of the suit, and the determination of the question as to the legal representative of the deceased party. The order consists of 12 rules that cover these aspects. You can find more details about this order in the Code of Civil Procedure, 1908, which is the main law governing civil suits in India.