Subpart 5615.3 - SOURCE SELECTION 5615.300 Scope of Subpart5615.303 Responsibilities.5615.305 Proposal Evaluation.5615.306 Exchanges with Offerors After Receipt of Proposals.5615.307 Proposal Revisions.5615.308 Source Selection Decision.5615.371 Only one offer.Parent topic: Part 5615 - CONTRACTING BY NEGOTIATION