A project manager needs to determine how much it will cost for a third party to complete certain deliverables and the steps they will take to complete those deliverables. Which of the following should

An RFQ (Request for Quotation) is primarily used when the requirements are clearly defined and the main objective is to obtain price quotes for specific goods or services.

An RFP (Request for Proposal) is used when the project manager needs detailed solutions, technical approaches, work methodologies, and pricing from potential vendors to meet project requirements, not just a price quote. It allows vendors to propose how they will achieve the deliverables.

A WBS (Work Breakdown Structure) is an internal project management tool that decomposes project scope into manageable work packages, not a document issued to external parties for proposals.

A SOW (Statement of Work) is a detailed description of the work to be performed and is typically part of a contract or included within an RFP from the requesting party, rather than a document the project manager issues to gather information.