Option A most accurately reflects the Product Owner's authority during backlog refinement and change management. The Product Owner decides which stakeholder input is relevant, evaluates suggested changes, and determines which changes should progress as formal Change Requests or be incorporated into the Prioritized Product Backlog.
Option B is incorrectly worded. The Scrum Master protects committed Sprint requirements and Acceptance Criteria throughout the active Sprint, not merely during the Sprint Review Meeting. The distinction matters because the Sprint Review occurs at the end of the Sprint and is specifically intended to validate completed deliverables and obtain feedback.
Option C describes development work that belongs to the Scrum Team. Stakeholders provide requirements, feedback, and Change Requests; they do not directly incorporate features into Sprint Deliverables.
Option D improperly gives the Scrum Team unilateral business authority over an urgent requirement change. Significant business changes are evaluated through the Product Owner/change-management mechanism. If a change is critical enough to invalidate current Sprint work, the Sprint can be terminated and replanned through the applicable Scrum governance process.
Therefore, A is the correctly matched responsibility.
Study Guide reference: Change - > Integrating Change; Product Owner Responsibilities; Groom/Refine Prioritized Product Backlog.
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