Explanation
= According to the PMBOK Guide, conflict management is the process of identifying and addressing differences that affect the performance of the project team or the project outcomes. Conflict management involves using appropriate techniques to resolve or prevent conflicts, such as collaborating, compromising, avoiding, forcing, or smoothing. In this scenario, the project manager should explain the impact of the scenario to the project team member, as this can help to raise the awareness of the team member about the negative consequences of the argument, such as damaging the relationship with the client, disrupting the meeting productivity, or affecting the project quality. The project manager should also try to understand the root causeof the conflict, and work with the team member and the client to find a mutually acceptable solution.
Talking to the client privately, removing the project team member from the meetings, or recommending a performance improvement plan are not the best options, as they may not address the underlying issue, or may create more resentment, distrust, or isolation among the team member or the client. References: = PMBOK Guide, 7th edition, pages 64-65, 68-69.