Correct Answer: DWhen faced with a high-performing team member whose performance is deteriorating, it is crucial for the project manager to understand the root causes of this change. Discussing the issue directly with the team member allows the project manager to gather insight into any personal or professional challenges the team member might be facing. By working together on an agreed solution, the project manager can help address these challenges, provide necessary support, and formulate a plan to enhance the team member's motivation and performance. This approach fosters open communication and demonstrates the project manager's commitment to the well-being and success of their team.