Which of the following is a complete indexed set of records of the procurement process incorporated into the administrative closure process?

The contract file, as defined in the PMBOK Guide, is a complete indexed set of procurement records - including the signed contract, approved change requests, performance reports, and financial documents - that is incorporated into the administrative closure process to formally close out procurement activities and preserve a full audit trail.

Required resources and skills are inputs to resource planning processes such as activity resource estimating and have no role as indexed procurement records in the administrative closure process.

Required actions to complete the project scope belong to scope management and project execution planning, not to the procurement documentation set compiled during administrative closure.

Descriptions of work packages are outputs of Work Breakdown Structure (WBS) decomposition and describe deliverable-level scope; they are not part of the indexed procurement record maintained in the contract file.