Explanation
Negotiating with the executives and agreeing on a process is the best way to resolve the conflicts between the project team and the executives regarding the agile transformation. This approach respects the interests and concerns of both parties and seeks to find a mutually acceptable solution that can support the project success.
Requesting that the executives use agile practices or including them in team retrospectives may not be effective if the executives are not willing or able to adopt the agile mindset or values. Training the executives on agile practices may be helpful, but it may not be sufficient to address the specific issues or challenges that the project team is facing. Negotiating and agreeing on a process can help the project team and the executives to align their expectations, communicate their needs, and collaborate on the project delivery. References: PMBOK Guide, Sixth Edition, Chapter 13, Section 13.5.2.4; Coaching Agile Project Teams - Navigate Conflict, PMI Global Congress 2009-North America, p. 3-4.