Disputes may be settled in each of the following ways except:​

A) ​adjudication
B) ​negotiation
C) ​exasperation
D) ​mediation

Adjudication

A formal judgment on a disputed matter, often resulting from a judicial hearing or legal proceedings.

Exasperation

A feeling of intense irritation or annoyance.

Negotiation

The process by which parties in dispute discuss and ultimately reach a mutually satisfactory agreement or solution.