What should the Scrum Master mention at the next retrospective?

Retrospectives are held to inspect what went well and what could be improved. According to the PMI Agile Practice Guide (Section 5.6), teams should use retrospectives to identify issues, root causes, and impediments, not just successes. Identifying and discussing the problems that arose helps the team avoid similar issues in future sprints.

Mike Griffiths in his PMI-ACP Exam Prep Book (Chapter 7: Continuous Improvement) emphasizes the importance of open discussions around problems and the value of a safe environment where teams can reflect and improve.

Option B is correct: by highlighting the problems that emerged, the Scrum Master sets the stage for continuous improvement and alignment with organizational goals.