In conflict resolution, particularly in stakeholder disagreements, the project manager should act as a facilitator and mediator. Scheduling a joint meeting to promote open dialogue and reach mutual understanding supports collaborative decision-making and promotes transparency.

The PMBOK® Guide – Seventh Edition and PMI's Conflict Resolution guidance recommend collaborative problem-solving as the most effective approach in stakeholder conflict. Engaging both parties together helps to clarify misunderstandings and identify common ground.

Option A is a last resort if resolution fails.

Option B is useful for gathering information but delays the resolution.

Option D lacks the project manager’s facilitation and may not be constructive.