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

 A sign-off is the formal acceptance of the project by the stakeholders, indicating that they agree that the project has met the requirements and delivered the expected value. A project review is an evaluation of the project performance and outcomes, but it does not necessarily imply acceptance. Risk assessment is a process of identifying and analyzing potential threats and opportunities that may affect the project. Inspection trend analysis is a technique of monitoring the quality of the project deliverables by comparing the results of inspections over time. References:

CBAP / CCBA Certified Business Analysis Study Guide, 2nd Edition, Chapter 10, page 367

BABOK® Guide, Section 7.6, page 294