Which of the following purchasing processes should a project team use to ensure that the work will be done per company specifications, while selecting the overall cheapest provider?

An RFI (Request for Information) is used to gather general information about potential suppliers' capabilities and offerings, not to solicit binding proposals or select a vendor.

A Request for Proposal (RFP) is the most suitable purchasing process when the project team needs to procure complex services or products where the exact solution is not predefined and vendors must propose how they will meet detailed company specifications along with pricing. RFPs enable a comprehensive evaluation of vendor capabilities, proposed methodologies, and costs, ensuring both technical compliance and financial value.

RFC (Request for Change) is a document used in change management to formally propose a modification to a project, not a purchasing process for soliciting bids.

An RFQ (Request for Quotation) is typically used for procuring standard, clearly specified goods or services where price is the primary selection criterion, without requiring detailed technical proposals or solutions.