What should the product owner do?

After the product vision is communicated, the product owner should ensure that the product backlog is prioritized so the team can focus on delivering the most valuable features first. According to the PMI Agile Practice Guide (Section 5.1 Product Backlog and Vision Alignment), prioritizing the backlog helps teams understand the product roadmap and plan their efforts accordingly.

Mike Griffiths in the PMI-ACP Exam Prep Book (Chapter 6: Adaptive Planning) reinforces that the product owner’s key responsibility is backlog prioritization, not task management or detailed design.

Option C is correct: prioritizing the backlog enables the team to understand and plan the roadmap.

Option A and B are too detailed for the product owner and move into the team ' s domain.

Option D is a team responsibility, not the product owner’s.