Summary Progress and Project Scope Decision

B.

The product that summarizes progress and is used to decide whether to amend the project scope or stop the project is the Product Status Account (PSA).

The PSA is a document that provides an up-to-date summary of the status of all products within the project. It includes information on the status of the products, any issues that have arisen, and any corrective actions that have been taken.

The PSA is used to inform the Project Board of the project's current status and to help them make informed decisions about whether to continue with the project or make changes to the scope. The Project Board will use the PSA to assess the project's progress and decide whether to authorize the next stage or to take corrective action.

The other options mentioned in the question are all project management products used within the PRINCE2 methodology, but they serve different purposes:

• The Checkpoint Report is used by the Project Manager to report progress to the Project Board at regular intervals during a stage.
• The End Stage Report is used to summarize the progress made during a stage and to provide the Project Board with the information they need to decide whether to authorize the next stage.
• The End Project Report is used to provide a final summary of the project's achievements, the lessons learned, and any recommendations for future projects.

In summary, while all of the products mentioned in the question are important project management documents in the PRINCE2 methodology, the Product Status Account is the document that summarizes progress and helps the Project Board decide whether to amend the project scope or stop the project.