According to the PMBOK® Guide and the Agile Practice Guide, projects characterized by a high degree of change (such as those using adaptive, iterative, or agile life cycles) necessitate a different approach to stakeholder management than predictive projects.

Frequent and Regular Engagement: When requirements are volatile or the environment is rapidly changing, the project manager must engage stakeholders regularly and frequently. This ensures that the team and the stakeholders remain in constant alignment regarding the project ' s direction and priorities.

Feedback Loops: Regular engagement creates shorter feedback loops. This allows the project manager to identify changes in stakeholder expectations or business needs early, reducing the risk of rework and ensuring that the final product delivers the intended value.

Proactive Management: Instead of waiting for formal reviews, the project manager uses continuous engagement (such as sprint reviews, demonstrations, or collaborative backlog refinement) to manage the " high degree of change " effectively.

Analysis of other options:

A. Discussing with management: While management is a stakeholder group, focusing only on them ignores the end-users, customers, and technical experts who are often the primary drivers of change in a project.

B. Escalating to the sponsors: Escalation is a conflict resolution or risk management path, not a proactive engagement strategy for handling high-change environments. Over-escalation can lead to a breakdown in the project manager ' s authority.

D. Engaging only with decision makers: In a high-change project, valuable information often comes from " influencers " or " users " who may not be final decision-makers. Ignoring these groups leads to missing critical requirements or identifying changes too late.

Per PMI standards, regular engagement with a broad range of stakeholders is the most effective way to navigate uncertainty and maintain agility throughout the project life cycle.