Reviewing Completed Stages

D.

The process that provides the Project Board with sufficient information for it to review the success of a completed stage and confirm continued business justification is D. Managing a Stage Boundary.

Managing a Stage Boundary is a process within the PRINCE2 methodology, which is a project management framework used to manage projects effectively. The purpose of this process is to review the progress of the current stage, update the project plan, and confirm that the project remains viable and justifiable.

During this process, the Project Manager provides the Project Board with a Stage Boundary Report, which outlines the achievements of the current stage, any issues or risks encountered, and the impact on the overall project plan. The Project Board reviews the report and confirms whether the project is still viable and justifiable, based on the current stage's outcomes.

If the Project Board confirms the project's viability and justifiability, the project can proceed to the next stage. If not, the project may be stopped, or changes may be made to the project plan to address any concerns.

In contrast, A. Controlling a Stage is a process focused on monitoring and controlling the progress of the current stage against the project plan. B. Closing a Project is a process focused on formally closing the project when it is completed, and C. Directing a Project is a process focused on providing the overall direction and management of the project by the Project Board.

Therefore, the best answer to this question is D. Managing a Stage Boundary, as it is the process that provides the Project Board with the information required to review the success of a completed stage and confirm continued business justification.