Confirming Business Justification

D.

The process that provides information for the project board to review a completed stage and confirm continued business justification is "Managing a Stage Boundary".

Managing a Stage Boundary is a process within the PRINCE2 (PRojects IN Controlled Environments) project management methodology that is used to manage the transition between two project stages. The purpose of this process is to review the performance of the current stage, update the project plan for the next stage, and confirm that the project remains viable and justifiable.

During this process, the project manager will produce a Stage Plan for the next stage, including a review of the Business Case to ensure that the project still has a valid reason to continue. The project manager will then present the updated plan and Business Case to the project board for approval.

The project board will review the updated plan and Business Case, and will make a decision on whether to approve the continuation of the project into the next stage. If the project board approves the continuation of the project, then the project can move on to the next stage. If the project board does not approve the continuation of the project, then the project will be closed.

Therefore, option D, "Managing a Stage Boundary" is the correct answer to the question, as this process provides information for the project board to review a completed stage and confirm continued business justification.