The project manager should review the operations manager's concerns and ensure these concerns are addressed, as this is part of managing stakeholder engagement. Stakeholder engagement involves communicating and working with stakeholders to meet their needs and expectations, address issues, and foster appropriate stakeholder involvement. By reviewing and addressing the concerns, the project manager can increase the stakeholder satisfaction and support for the project, as well as avoid potential conflicts and delays. The other options are not the best ways to handle this situation, as they either ignore, escalate, or document the concerns without resolving them. References: (Professional in Business Analysis Reference Materials source and documents) PMBOK Guide, 6th edition, Chapter 13, Section 13.3 PMP Exam Content Outline, June 2019, Domain II, Task 9 PMP Sample Test Questions, Question 163