Which of the following is the formal acceptance of the project?

A project review is a performance evaluation of project progress and outcomes, not the formal acceptance document that closes the project.

A sign-off represents the formal, documented acceptance of the project, where the sponsor, client, or authorized stakeholders acknowledge that deliverables meet agreed-upon requirements. It serves as the official record that the project is complete and transfers ownership of deliverables to the customer or organization. Without a sign-off, project closure cannot be formally achieved.

Risk assessment identifies and evaluates potential threats to the project and is a planning or monitoring activity, not a formal acceptance mechanism.

Inspection trend analysis reviews quality data over time to identify patterns, which is a quality control activity unrelated to formal project acceptance.