
Explanation:
Box 1: Failover Cluster Manager.
Since VM1 is part of a failover cluster, you would configure the monitoring for the VM through Failover Cluster Manager. This tool allows you to configure health checks and service monitoring for VMs in a clustered environment.
Box 2: Restart the Service.
To ensure that the cluster can take recovery actions when Service1 fails, setting the recovery action to Restart the Service is appropriate. This ensures that the service is restarted automatically if it stops or crashes.