According to the PMBOK Guide, project completion involves verifying that all the project deliverables meet the acceptance criteria and obtaining formal acceptance from the customer. Sometimes, the customer may request changes or modifications to the deliverables, which may affect the project scope, schedule, cost, or quality. In such cases, the project manager should negotiate with the customer to reach a mutually satisfactory agreement that balances the project objectives and the customer expectations. Negotiation is the process of conferring with others to come to terms with them or reach an agreement. The first step in negotiation is to analyze the bounds of the negotiation, which means to identify the best alternative to a negotiated agreement (BATNA), the worst alternative to a negotiated agreement (WATNA), and the zone of possible agreement (ZOPA) for both parties. BATNA is the most advantageous alternative course of action a party can take if negotiations fail and an agreement cannot be reached. WATNA is the worst outcome that a party can expect if negotiations fail. ZOPA is the range of possible outcomes within which an agreement can be reached by both parties. By analyzing the bounds of the negotiation, the project manager can determine the minimum and maximum acceptable outcomes for both parties, and use them as a reference point for making offers and counteroffers. This can help the project manager to avoid deadlock, impasse, or unfavorable outcomes, and to achieve a win-win situation. Therefore, option A is the best answer. References: (Professional in Business Analysis Reference Materials source and documents)
* PMBOK Guide, 6th edition, Chapter 4: Project Integration Management, pages 123-124
* PMBOK Guide, 6th edition, Chapter 12: Project Procurement Management, pages 481-482
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