Final answer:
The correct answer is Azure Monitor, which allows you to set up alerts for various resources including virtual machines.
Step-by-step explanation:
The correct answer is Azure Monitor. Azure Monitor is a service in Microsoft Azure that provides monitoring and alerting capabilities for various resources, including virtual machines. With Azure Monitor, you can set up alerts to notify you when certain conditions are met, such as an administrator stopping a virtual machine. This can be done by creating an alert rule for the virtual machine and configuring the appropriate conditions and actions.
For example, you can set up an alert rule that triggers an alert if the virtual machine state changes to 'Stopped' and sends an email notification to the administrator. Azure Monitor also provides a central platform for collecting and analyzing monitoring data from different Azure resources, allowing you to gain insights into the performance and health of your virtual machines.
Learn more about Azure Monitor