The correct answer is C. the Microsoft 365 Copilot dashboard in Microsoft Viva Insights . Microsoft documents that the Microsoft Copilot Dashboard in Viva Insights provides detailed organizational reporting for Copilot usage and impact, including meeting-related metrics such as total meeting hours summarized or recapped , intelligent recap actions taken using Copilot , and summarize meeting actions taken using Copilot in Teams . Those metrics directly match the scenario in the question.

The other options are less suitable. The Microsoft 365 Apps usage report focuses on app usage generally, not detailed Copilot-in-Teams behavior. The Copilot readiness report is for readiness and deployment planning, not deep Teams usage metrics. The Microsoft 365 Copilot usage report in the admin center provides adoption information, but Microsoft’s detailed meeting-action and meeting-hours metrics are documented in the Viva Insights Copilot Dashboard . Therefore, for detailed Teams-specific Copilot reporting during a pilot, the best answer is the Microsoft 365 Copilot dashboard in Microsoft Viva Insights .