In which stage of the project timeline should integration of change management and project management...

ACMP stresses thatintegration of change and project management plans must occur at the startof the project. This ensures people-focused activities (communications, training, resistance management) are aligned with technical deliverables from the outset. Waiting until after assessments (A, C) or months into the project (B) risks misalignment, duplicated efforts, and resistance. Thus, option D reflects best practice for integrated planning.

(Reference: ACMP Standard, Process Group 2 – Formulate; Guidance: Integrate change management and project management early, ideally at project initiation.)