At which frequency are new services discovered when using Service Discovery in vRealize Operations?

An administrator has an existing vRealize Operations instance that monitors an existing vSphere infrastructure. The company has just deployed NSX-T across all hosts managed within this vSphere infrastructure.
The administrator has been asked to configure vRealize Operations to monitor the new NSX-T installation.
Which action should the administrator take to accomplish this goal?

A system administrator wants to create a dashboard from widgets.
Which three widgets are available? (Choose three.)

After deploying vRealize Operations, an administrator needs to configure cost drivers to accurately reflect the purchase price and date of all nodes within the VMware vSAN cluster that are being monitored.
Which type of cost driver should the administrator select?

Users have reported several application VMs are performing very slowly. The system administrator was requested to find out the source of the problem on both VMs and/or ESXi hosts level. vRealizeOperations has not been configured with Application Remote Collector.
Which action will help the administrator to quickly identify the underlying problem?