A: The Azure Connected Machine agent enables you to manage your Windows and Linux machines hosted outside of Azure on your corporate network or other cloud providers.
C: Connect Microsoft Sentinel to other Microsoft services with a Windows agent-based data connector Connect Microsoft Sentinel to other Microsoft services by using a Windows agent-based connections. Microsoft Sentinel uses the Azure foundation to provide built-in, service-to-service support for data ingestion from many Azure and Microsoft 365 services, Amazon Web Services, and various Windows Server services. There are a few different methods through which these connections are made.
Reference:
https://learn.microsoft.com/en-us/azure/azure-arc/servers/agent-overview
https://learn.microsoft.com/en-us/azure/sentinel/connect-services-windows-based