Explanation
= The project manager should assess a mechanism for knowledge transfer among the team members, as this is the best way to ensure that the project continuity and quality are not compromised when the core team member leaves. The project manager should identify the critical knowledge and skills that the team member possesses, and plan how to share them with the rest of the team. The project manager should also monitor and support the knowledge transfer process, and evaluate its effectiveness. The other options are not the best actions to take in this situation, as they do not address the root cause of the problem or seek to mitigate the risk. References: = A Guide to the Project Management Body of Knowledge (PMBOK Guide) - Seventh Edition, Chapter 6:
Project Team, Section 6.3: Develop Team, Page 163-164.