Successful release depends fundamentally on the Scrum Team creating the agreed deliverables so that completed and accepted work can eventually be transitioned to the customer or other relevant business stakeholders. The Release phase's Ship Deliverables process handles accepted deliverables, while the Product Owner coordinates deployment with the customer.

Option B describes activities associated with the Product Owner following validation and backlog/release-plan management rather than the specific condition the Scrum Master must ensure for successful creation of releasable work.

Option C is incorrect because the Release Planning Schedule is developed during Conduct Release Planning, involving the Product Owner and Scrum Core Team; it is not simply created by the Scrum Team during Ship Deliverables.

Option D incorrectly assigns acceptance authority. During Demonstrate and Validate Sprint, the Product Owner, not the Scrum Team, accepts or rejects completed User Stories against their Acceptance Criteria.

Therefore, ensuring that the Scrum Team creates the committed deliverables as agreed provides the necessary basis for later acceptance and release.

Study Guide reference: Release - > Ship Deliverables; Implement - > Create Deliverables; Review and Retrospect - > Demonstrate and Validate Sprint.

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