Explanation
= A communication matrix is a tool that helps project managers plan, execute, and evaluate the communication strategies for a project. It includes information such as the communication methods, frequency, audience, owner, and purpose for each stakeholder. Updating thecommunication matrix is important to ensure that all relevant stakeholders are informed and engaged in the project, and to avoid communication gaps or conflicts. The project manager should update the communication matrix to include the client team member who is not on the list given by the former project manager, and to ensure that the client team member receives the appropriate level and type of communication for their role and needs. This will help the project manager address the client team member's lack of understanding and prevent further delays in the project progress. The other options are not the best choices, because they do not address the root cause of the problem, which is the lack of communication with the client team member. Submitting a change request to cover extra hours associated with project meetings (A) may not be necessary or feasible, and it does not guarantee that the client team member will understand the project elements better. Speaking with the client team member about the continuous delays during project meetings (B) may be confrontational and ineffective, and it does not solve the communication issue. Increasing the project meeting frequency and duration to allow for the extra work required (D) may be counterproductive and inefficient, and it may not suit the communication preferences of the client team member or other stakeholders. References: = Project Management Professional (PMP) Exam Content Outline, A Guide to the Project Management Body of Knowledge (PMBOK Guide), Sixth Edition, Communication Matrix How-To & Template | TeamGantt, Free Communication Matrix Templates With How-To | Smartsheet