What are the most important components used to formulate a high-quality communication plan?

The ACMP Standard states that a strong communication plan is built onthree critical inputs:

Change impact assessment(defines what will change and who is impacted).

Organizational change readiness assessment(measures preparedness to receive messages).

Stakeholder analysis(identifies audiences and influencers).Customer input (A, D) and operational strategies (C) may provide context, but they are not the essential core inputs. Option B matches ACMP guidance for communication planning.(Reference: ACMP Standard, Process Group 3 – Communication Plan; Inputs: Impact assessment, readiness assessment, and stakeholder analysis.)