In an agile project, the project manager should collaborate with the stakeholders and the product owner to manage changes in the product. Asking the stakeholders about the priority of this change will help the project manager understand the value and urgency of the change, and align the expectations of the stakeholders with the project vision. Asking the product owner to review the product backlog will help the project manager ensure that the change is properly prioritized and incorporated into the product backlog, which is the source of requirements for the agile project. Asking the team members to analyze the impact of this change, asking the sponsor to approve the change request, or asking the team members to include the change in the next iteration are not the best actions to take in an agile project, as they may introduce unnecessary delays, bureaucracy, or scope creep. References: = PMBOK Guide, 6th edition, page 18, section 1.2.3 (Agile Considerations); page
176, section 5.1.1.1 (Project Stakeholders); page 179, section 5.1.3.1 (Project Charter); page 181, section
5.2.1.1 (Product Owner); page 182, section 5.2.3.1 (Product Backlog)

The servant leader project manager should explore a training program that is within the project budget for the team members. This is the best option because it shows the project manager's commitment to developing the team's skills and capabilities, as well as addressing the project's needs. A training program can help the team members acquire the technical skills required for the upcoming tasks, as well as increase their motivation and confidence. This option also aligns with the servant leadership principle of "commitment to the growth of people"1.
The other options are not as effective as option D. Option A is not supportive and may demoralize the team members. Option B is not collaborative and may disrupt the team dynamics. Option C is not proactive and may damage the project manager's credibility. References: 1: PMBOKGuide, 7th edition, page 63

When a project deliverable is not fulfilling the business case requirement, it is important for the project manager to understand why this is happening. Analyzing the business benefits criteria and assumptions (Option C) can help identify if there were any discrepancies or misunderstandings in the initial planning stages. This could include reassessing the expected benefits, costs, risks, and strategic alignment of the project.
Additionally, scheduling a project review meeting to analyze the root cause (Option E) can provide valuable insights into what went wrong. This could involve discussions with the project team, stakeholders, and possibly the operations team who are now handling the deliverable. The goal of this meeting would be to understand the root cause of the issue and to identify potential solutions or improvements for future projects.
= Project Management Institute's Guide to the Project Management Body of Knowledge (PMBOK Guide),
6th Edition1; Unito's guide on Project Deliverables2.

According to the PMBOK Guide, the primary objective of any project is to deliver value to the customer and satisfy their needs and expectations1. The project manager should tell the team members to focus on delivering value to the customer by ensuring that the project deliverables meet the quality standards, the requirements, and the acceptance criteria2. Therefore, the best option is to deliver value to the customer.
Option A is incorrect because reducing cost for the customer may not be the main focus of the project, as it may compromise the quality or the scope of the project. Option C is incorrect because working together as a team is important, but it is not the ultimate goal of the project. Option D is incorrect because finishing the project on schedule may not be enough to deliver value to the customer, as it may not reflect the quality or the functionality of the project deliverables. References: 1: PMBOK Guide, 6th edition, section 1.2.2, p. 7 2:
PMBOK Guide, 6th edition, section 5.1.3.1, p. 149