A data analyst needs to visualize VM performance over time. Which Azure service supports this?

Azure Monitor Metrics is the correct choice because it collects numerical data from Azure resources, including VMs, at regular intervals. This data can then be used to create charts and dashboards, allowing the data analyst to visualize performance trends over time. Azure Sentinel is a Security Information and Event Management (SIEM) service, focused on security analytics and threat intelligence, not general performance monitoring. Azure Policy helps enforce organizational standards and assess compliance, which is unrelated to performance visualization. Azure Active Directory is a cloud-based identity and access management service, not a monitoring solution.