The best course of action in this scenario is for the project manager to engage with the team to reprioritize tasks. This aligns with the PMP's emphasis on the project manager's role in leading and managing the project team. According to the PMBOK guide, the project manager should work with the team to assess the situation, reprioritize work, and apply resource optimization techniques to ensure that critical project milestones are met. This approach is proactive and focuses on problem-solving within the team's capacity, rather than escalating the issue or sharing the challenges with stakeholders, which may not lead to a constructive solution.
The PMBOK Guide and the PMP Examination Content Outline provide guidance on the project manager's role in leading the team and managing project work, which includes resource optimization and prioritization of tasks12. The Professional in Business Analysis Reference Materials also support the approach of internal team collaboration and problem-solving to address project challenges3.

A project manager should mentor the team member who is asking for directions and actions on many tasks, as this indicates a lack of confidence, competence, or clarity in the team member's role and responsibilities. Mentoring is the process of providing personal support and guidance to a less experienced team member by a seasoned project manager. A mentor can help the team member develop their skills, knowledge, and abilities, as well as provide feedback, advice, and encouragement. A mentor can also help the team member understand the project objectives, scope, deliverables, processes, and standards, and how to align their work with them. By mentoring the team member on a regular basis, the project manager can help the team member improve their performance, productivity, and quality of work, as well as increase their motivation, engagement, and satisfaction. Reference: Project Management Professional (PMP) Certification | PMI, Mentoring - Key Competency for Program and Project Professionals, What Good is a Project Manager Mentor? | PMI

When interpersonal conflict affects team performance, the first step is to understand the perspectives of the involved parties. Active listening and empathizing help the project manager identify the root cause of the conflict, which is essential before attempting resolution or escalation.
The PMBOK Guide - Seventh Edition and PMI's guidelines for conflict management emphasize that a project manager must act as a facilitator to resolve issues constructively. Addressing conflict early improves morale, performance, and collaboration.
Option B may help team cohesion but doesn't directly address the interpersonal issue.
Option C is reactive and doesn't address the cause of conflict.
Option D risks exposing sensitive conflict in an open forum.
Reference:
PMBOK Guide - Seventh Edition, Team Performance Domain
PMI's Conflict Management Techniques (e.g., Collaborating, Problem-Solving)
-