While reviewing the project's deliverables list, a stakeholder expresses concern that a requirement will not be met. What should the project manager do?

The correct answer is to review the requirements traceability matrix with the concerned stakeholder. This matrix links requirements to their origin, tests, and other project artifacts, providing visibility into how each requirement is being addressed and verified. This helps the stakeholder understand the requirement's status and how it connects to the project's scope and deliverables, addressing their concern directly. Checking the approved requirements list for missing items is reactive and doesn't directly address a concern about an existing requirement not being met. Working with the stakeholder to refine acceptance criteria might be a later step if the requirement itself is unclear, but first, you need to understand the basis of their concern. Discussing additional requirements prematurely adds scope without resolving the current issue.