The correct answer is A - Lead the team and help them to constantly improve the processes in the project.
The Scrum Master is responsible for ensuring that retrospective action items are tracked and followed up on.
While the team owns the improvement actions, the Scrum Master provides support, accountability, and facilitation to ensure that continuous improvement happens.
PMI Agile Practice Guide:
"The Scrum Master facilitates continuous improvement by helping the team reflect, identify actions, and ensure those actions are implemented." (PMI Agile Practice Guide, Section 5.8 - Retrospectives) Mike Griffiths:
"Retrospectives are only effective if outcomes are tracked. The Scrum Master ensures improvement ideas are not forgotten and become part of the team's evolution." (PMI-ACP Exam Prep, Chapter 7 - Continuous Improvement) Incorrect options:
* B uses a confrontational tone-contrary to servant leadership.
* C implies micro-management and contradicts self-organization.
* D avoids responsibility for facilitating improvements.