Collaborating is the conflict resolution method used when parties seek to solve the problem by openly clarifying differences and attempting to satisfy everyone's objectives. It is a win-win approach that emphasizes problem-solving, transparency, and shared understanding. Accommodating means one party yields to another, which may preserve harmony but does not necessarily solve the underlying issue.
Compromising requires each party to give up something, producing a middle-ground solution rather than full achievement of everyone's objectives. Competing is a win-lose approach based on power, authority, or assertiveness. Internal auditors frequently manage conflicts over findings, ratings, recommendations, and timelines. Collaboration is most appropriate when the issue is important, relationships matter, and a durable solution is needed. Therefore, Option C is correct.