Explanation
The project manager should ask the Scrum team members to share retrospectives because they can provide valuable insights and feedback on the project performance,processes, and practices. Retrospectives are an agile technique that helps teams to identify what went well, what can be improved, and what actions can be taken to enhance future performance. By asking the Scrum team members to share retrospectives, the project manager can facilitate a collaborative and constructive learning environment, and capture the lessons learned from both the agile and traditional aspects of the hybrid project. This can also help to increase the stakeholder's appreciation and understanding of the Scrum team's contribution and value to the project. References:
A Guide to the Project Management Body of Knowledge (PMBOK Guide) - Seventh Edition, Chapter
3.2.4, page 57
Agile Practice Guide, Chapter 3.3.2, page 48
PMP Exam Content Outline, Domain III: Executing, Task 9