Which plan specifies what information will be communicated and when?

The Communications Management Plan is specifically designed to outline how communication will occur throughout a project or within an organization. This plan details what information needs to be communicated, who the target audience is, the format of the communication, when the communication should take place, and through what channels. By defining these elements, the plan ensures that all stakeholders are kept informed in a timely and effective manner, thus facilitating smooth collaboration and reducing the risk of misunderstandings.

In contrast, while the Stakeholder Management Plan addresses stakeholder engagement and identification, it does not provide the specific details about communication methods and schedules. The Resource Management Plan primarily focuses on how resources (like personnel and materials) are managed, and the Time Management Plan relates to scheduling tasks and managing timelines rather than communication specifics. Therefore, the Communications Management Plan is the most appropriate choice for specifying what information will be communicated and when.