When a key project deliverable is discovered to be unbudgeted, the project manager should first meet with the team to discuss alternatives. This collaborative approach is recommended as it involves the team in problem- solving and may lead to innovative solutions that the project manager alone might not consider. It is also aligned with the principles of the PMBOK Guide, which emphasizes engaging with the team and stakeholders to address project challenges. : The answer is verified by discussions found in PMP exam-related forums and aligns with the principles outlined in the PMBOK Guide and the Professional in Business Analysis Reference Materials12.