According to the PMBOK® Guide, communication process control is the process of monitoring and controlling communications throughout the entire project life cycle to ensure the information needs of the project stakeholders are met1. It involves ensuring that the communication management plan is effective and updated as needed, managing the flow of information, resolving communication issues, and implementing approved changes to the communication methods or tools1.

In this scenario, the project manager should first revisit the communication process control to identify and address the root cause of why different draft versions of the design document were distributed to the meeting participants. This could involve reviewing the communication management plan, the configuration management plan, the change management plan, and the project documents updates to ensure that the communication process is aligned with the project objectives and stakeholder expectations. The project manager should also implement corrective actions to prevent the recurrence of such communication errors and improve the quality and consistency of the project information.

Options B, C, and D are possible actions that the project manager could take after revisiting the communication process control, but they are not the first step to ensure that this does not happen again. Option B is a preventive action that could help avoid confusion and ambiguity among the stakeholders, but it does not address the underlying issue of how different draft versions were shared in the first place. Option C is a detective action that could help identify the source of the problem, but it does not provide a solution or improvement to the communication process. Option D is a corrective action that could help resolve the current situation, but it does not prevent future occurrences of the same problem. References: 1 PMBOK® Guide, 6th edition, page 377-378.