Which of the following occurs during administrative closure?

Requiring input from the sponsor on project objectives occurs during the initiation or planning phase, not administrative closure.

Updating quality expectations for deliverables occurs during the planning or execution phases, as quality is monitored and controlled throughout the project lifecycle, not just at closure.

Closing out contracts with vendors is a crucial part of administrative closure, as it involves formally terminating agreements, ensuring all financial obligations are met, and documenting the closure for legal and audit purposes. This action signifies the end of external service engagements related to the project.

Revealing new WBS tasks to team members happens during the planning or execution phases when the work breakdown structure is developed and tasks are assigned, not during administrative closure.