The majority of cases are settled using __________.probationa duelrestorationarbitration

The correct answer is arbitration.

Arbitration is a method of resolving disputes outside of the courts. It involves the disputing parties agreeing to submit their conflict to one or more arbitrators who make a binding decision. This process is often preferred because it can be quicker, less formal, and more confidential than traditional court proceedings. The majority of cases, particularly in commercial and contractual matters, are settled through arbitration due to its efficiency and the ability to choose an arbitrator with expertise in the specific area of dispute.

In contrast, probation refers to a period of supervision over an offender, which is not applicable here, and a duel typically refers to a historical method of settling disputes through combat, which is not relevant in modern legal contexts. Restoration is also not directly related to the mechanism of dispute resolution as arbitration is.