Each Scrum role has specific responsibilities in managing a Scrum project. Below, choose the role that is correctly matched to its responsibility.

Each Scrum role has specific responsibilities in managing a Scrum project. Below, choose the role that is correctly matched to its responsibility.
A . Product Owner – invites to a grooming session only those stakeholders whose feedback is required and who can make final decisions about which suggested changes can be considered as Formal Change Requests.
B . Scrum Master – ensures that the requirements and Acceptance Criteria are not altered during the Sprint Review Meeting.
C . Stakeholders – incorporate new and modified features into the deliverables whenever possible.
D . Scrum Team – decide whether the change can wait until the next Sprint or represents an urgent situation that may require ending the current Sprint and starting a new one.

Answer: B

Explanation:

Although the Stakeholder(s) and the Product Owner have the final say on Prioritized Product Backlog Items and whether to accept or reject any Change Requests presented during Demonstrate and Validate Sprint, it is the Scrum Master’s responsibility to ensure that the requirements and Acceptance Criteria are not altered during the Sprint Review Meeting for the User Stories completed in the current Sprint. This prevents the rejection of completed User Stories based on the fact that they do not meet newly changed requirements. If any requirements need to be changed, any corresponding PBI needs to be revised to accommodate the modified requirements in a future Sprint.

Reference: http://blog.scrumstudy.com/change-management-in-scrum-framework/