According to the PMBOKGuide, the project manager is responsible for tailoring the project management processes and practices to suit the project context and environment. Therefore, the project manager should have assessed the organization's culture, performed a suitability analysis, and determined the future state before adopting an agile methodology. This would have helped to identify the readiness, gaps, and risks of implementing agile in the organization, and to plan for the necessary changes and support. Conducting agile training for all employees may be a good practice, but it is not sufficient to avoid the implementation failure.
Training alone does not guarantee the adoption or success of agile, as there may be other factors such as resistance, misalignment, or misunderstanding that hinder the agile transformation. Conducting a postmortem and capturing the learning in OPAs may be a useful activity, but it is not a preventive measure. It is a reactive action that occurs after the implementation failure, and it does not address the root causes or the solutions for the failure. Hired a third-party agile delivery team to do the implementation may not be the best option, as it may create dependency, communication, or integration issues. The project manager should have involved the internal project team and stakeholders in the agile implementation, and ensured that they have the skills, knowledge, and commitment to adopt agile. References: PMBOKGuide, Sixth Edition, Chapter 1, Section
1.2.4 (Tailoring) and Chapter 3, Section 3.2 (Project Management Process Groups)

The project manager should promote an environment where everybody knows what their contribution means to the project as a whole because this is the best way to have a highly engaged team. Agile projects are based on values and principles that emphasize collaboration, flexibility, and customer satisfaction, which require the team members to be motivated, committed, and empowered. Therefore, the project manager should communicate the vision, goals, and expectations of the project, and help the team members understand how their work adds value to the project and the organization. The project manager should also encourage the team members to share their ideas, feedback, and concerns, and involve them in decision-making and problem- solving. This can help to create a sense of ownership, accountability, and pride within the team, and foster a positive and productive work culture. The other options are not the best choices because they do not support the agile approach or the team engagement. Being clear with directions and assignments so people stay focused and engaged with their work (option A) may imply that the project manager is using a directive or authoritarian style, which may limit the team's autonomy and creativity. Designing a reward system to get people motivated by recognizing significant individual contributions from the last sprint (option C) may help to acknowledge and appreciate the team members, but it may also create competition and conflict within the team, and may not align with the agile principle of valuing the team's performance over the individual's performance. Encouraging continuous rotation of roles among team members to keep people motivated throughout project delivery (option D) may help to diversify and enhance the team's skills and knowledge, but it may also disrupt the team's stability and efficiency, and may not consider the team members' preferences and strengths. References: PMBOK Guide, 6th edition, pages 18-19, 52, 273, 335, 686-687. [PMP Questions page 467]. PMP Practice Exam | Free PMP Practice Questions.

The best approach to engage stakeholders in a project is to analyze both internal and external stakeholders and then develop a tailored engagement strategy for each one. This is because stakeholders have varying levels of interest, influence, and impact on the project, which necessitates a customized approach to ensure effective engagement and communication. The PMBOK Guide emphasizes the importance of identifying stakeholders and understanding their needs and expectations as a foundation for developing an appropriate engagement strategy. This strategy should be designed to involve stakeholders in a manner that is aligned with their level of interest and influence over the project outcomes.
Effective stakeholder engagement is crucial for project success as it helps in building trust, ensuring clear communication, and fostering collaboration among all parties involved. It also aids in managing expectations and mitigating potential risks associated with stakeholder interactions. By engaging stakeholders appropriately, the project manager and team can leverage their support and contributions, which can be vital for the successful delivery of the project.
Based on the principles outlined in the PMBOK Guide and the standards for stakeholder engagement as described in PMI's resources1234.

According to the PMBOK Guide, the communications management plan is a component of the project management plan that describes how project communications will be planned, structured, implemented, and monitored for effectiveness. It also defines the communication methods, formats, frequency, and escalation process for different types of communication. In this scenario, the project manager should update the communications management plan to include informal requests from the executive, such as the dashboard, and specify how they will be handled by the project team. This way, the project manager can ensure that the communication expectations of the executive are met, and the project team is aware of their roles and responsibilities in providing the requested information. Updating the stakeholder engagement assessment matrix, asking the team member to develop a dashboard, or telling the team member to route the request through the project manager are not effective options, as they do not address the root cause of the communication issue, which is the lack of a clear and comprehensive communications management plan. References: PMBOK Guide, 7th edition, pages 123-124, 127-128.