The team charter defines behavioral norms, team values, and conflict resolution procedures. In conflict situations, the project manager should first refer the individuals to the team charter and address the behavior through a private one-on-one discussion to resolve misunderstanding or misalignment.

The PMBOK® Guide – Seventh Edition emphasizes use of the team charter as a reference to manage team expectations, promote respectful behavior, and resolve interpersonal issues.

Option A is premature and avoids resolution.

Option B could publicly escalate the issue and create tension.

Option D is generic and doesn’t address the behavioral concern directly.