After taking over an agile project, you find repeated issues during development caused by unclear product requirements. How should the project manager address this?

The correct approach is to gather the project team and product owner to find a solution design. Unclear requirements are a common agile challenge, and the product owner is the definitive source for product requirements. Involving the development team ensures that the solution is technically feasible and understood by those who will implement it. This collaborative effort directly addresses the root cause of the issues by clarifying expectations and fostering shared understanding. Estimating tasks (milestones, story points) is a separate activity that follows clear requirements, not a solution for unclear ones. Reviewing issues for "product value" is too broad and doesn't directly address the requirement clarity problem. Revising the Definition of Done (DoD) might improve quality but won't resolve ambiguity in the requirements themselves.