13.
The answer is: C
Explanation
The correct option is C: Negotiation.
Section 89 of the Code of Civil Procedure, 1908 empowers the court to refer the matter to alternative dispute resolution methods such as arbitration, conciliation, judicial settlement including Lok Adalat, and mediation.
Negotiation is not one of the methods specified in the section, and therefore the court cannot make a reference for it. Negotiation is a process of resolving disputes by direct communication between the parties, without the involvement of a third party. Negotiation can be done before or during the litigation, but it is not a method of settlement under Section 89 of CPC.