The communications management plan is a component of the project management plan that describes how project communications will be planned, structured, implemented, and monitored for effectiveness. It also defines the communication requirements, methods, and channels for different stakeholders, as well as the confidentiality and security levels of the information to be shared. The project manager should have reviewed the communications management plan before inviting an external client representative to the meeting, to ensure that the information presented was appropriate and authorized for external disclosure. The project manager should also have obtained the approval of the project sponsor and the CEO before sharing any sensitive or confidential information with the external client representative. By not reviewing the communications management plan, the project manager may have violated the communication policies and protocols of the organization, and potentially compromised the project’s budget, scope, quality, or schedule. This could have caused the CEO to end the meeting abruptly, to avoid further disclosure of information that could harm the project or the organization. The other options are not the best choices because they do not address the root cause of the situation, which is the lack of review of the communications management plan. Reviewing the cost management plan with internal participants and CEO prior to inviting an external client representative to the meeting (option B) may be a good practice, but it does not ensure that the information shared with the external client representative is appropriate and authorized. Performing a root cause analysis with the external client representative and documenting the findings in the lessons learned register (option C) may be useful after the situation has occurred, but it does not prevent the situation from happening in the first place. Sending the presentation slides to internal participants first and then to the external client representative prior to the meeting (option D) may also be a good practice, but it does not guarantee that the information in the slides is suitable and approved for external communication. References:

Project Management Professional (PMP) Reference Materials:

A Guide to the Project Management Body of Knowledge (PMBOK Guide), Sixth Edition, Chapter 10: Project Communications Management, pp. 361-411

Project Communication Management According to the PMBOK

Professional in Business Analysis (PBA) Reference Materials:

Business Analysis for Practitioners: A Practice Guide, Chapter 4: Planning Business Analysis Work, pp. 59-60

Effective Project Communication Plan Template: TeamGantt