Which step must an administrator take to configure Application Virtual Networks (AVNs) from SDDC Manager...

Comprehensive and Detailed Explanation From Exact Extract:

Before configuring Application Virtual Networks (AVNs) from SDDC Manager, the administrator mustdeploy an NSX Edge Cluster. The official VMware Cloud Foundation documentation specifies that an NSX Edge Cluster is required to provide the necessary network services and routing capabilities for AVNs, which are used to support management components such as VMware Aria Suite Lifecycle. Without the NSX Edge Cluster, AVN creation and related network functionalities cannot be configured or used from SDDC Manager. Steps such as enabling AVNs in vCenter Server, ensuring a load balancer, or assigning AVNs to specific ESXi hosts are not the prerequisites required by the workflow.