The correct recommendation is to identify one stakeholder for general communications and additional stakeholders for department-specific communications. The scenario describes a layered communication model: executive leadership owns broad organizational messaging, while department or director-level leaders adapt follow-up communications to the needs of their own teams. A strong Slack communication plan must mirror that operating model by defining communication owners, audiences, message responsibilities, and delivery channels. Option A may be useful in some organizations, but simply creating department announcement channels does not solve ownership and coordination. Option B is too rigid; threading can be useful for keeping questions and discussion organized depending on the channel's purpose. Option D focuses on engagement tools, but sentiment capture is secondary to the core requirement: structured communication ownership across enterprise and department levels. Option C directly supports change management because it assigns accountability for enterprise-wide communications and localized reinforcement. This prevents message gaps, duplicate announcements, and inconsistent guidance during launch.

Reference topic: Learning and Enablement --- communication planning, stakeholder ownership, change management, department-level reinforcement, and launch communications.

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