The change manager in SAP cloud projects drives OCM execution. Option A is correct because orchestrating activities (e.g., coordinating communication, training) ensures a cohesive effort, like a conductor aligning an orchestra—e.g., timing stakeholder workshops with project milestones. Option C is correct as providing expertise on people challenges (e.g., resistance, skill gaps) guides the project team, offering solutions like tailored enablement. Option D is correct because supporting execution (e.g., facilitating workshops, reviewing plans) ensures activities succeed, often hands-on with the team.

Option B is incorrect—“advising all leaders” overstates the role; change managers coach key leaders, but breaking resistance is a shared leadership task. Option E is incorrect; while they might speak, key speakers are often sponsors or leaders for authority—change managers focus on planning, not presenting. SAP OCM defines the change manager as a strategic coordinator and expert.

“Change managers orchestrate OCM activities, provide people-focused expertise, and support execution to ensure project success” (SAP Activate, Change Manager Role).