A team has been working for two months and has consistently missed planned user stories. How should the project manager address this issue?
正解:C
Explanation = The project manager should ensure the sprint size is appropriate for the iteration duration. This means that the team should be able to complete the user stories within the timebox of the sprint, without compromising the quality or scope of the deliverables. If the team is consistently missing planned user stories, it may indicate that the sprint size is too large or the iteration duration is too short. The project manager should work with the team and the product owner toadjust the sprint size and the product backlog accordingly, based on the team's velocity and capacity12. References: = PMBOK Guide 7th Edition, Chapter 5: Delivery Performance, Section 5.2.3: Plan and Manage Iterations; PMBOK Guide 6th Edition, Chapter 6: Project Schedule Management, Section 6.2.2.5: Agile Release Planning.