A project manager has taken over an agile project. There have been several issues during product development due to unclear product requirements. How should the project manager resolve this issue?

Assisting the team with estimations like milestones and story points does not address the root cause of unclear product requirements, which is the lack of clarity on what needs to be built.

Gathering the team and product owner to find a solution design is a specific activity related to design, not necessarily resolving the underlying problem of unclear requirements themselves across the project.

In an agile environment, continuously reviewing issues and identifying opportunities for improvement is a core practice (e.g., during retrospectives) that helps refine understanding of requirements and ensure the product delivers value. This approach focuses on iterative learning and adaptation, which is crucial for clarifying requirements over time.

Reworking the definition of done (DoD) clarifies acceptance criteria for work items, but it does not inherently clarify the initial product requirements that inform what goes into the backlog.