An administrator is tasked to deploy a new vSAN Storage Cluster to an existing VCF...

Comprehensive and Detailed Explanation:

The VCF 9.0 Architecture and Deployment Guide explains that within a single Workload Domain, administrators can scale resources by adding additional clusters, including compute or vSAN storage clusters. Specifically, “A Workload Domain can contain multiple clusters. You can deploy a new cluster, such as a vSAN cluster, into an existing domain without introducing new management components.” .

Options A and D both introduce new workload domains or VCF instances, which require their own management stack (vCenter, NSX Manager, etc.) and are unnecessary in this scenario. Option B is incorrect because “vSAN storage-only nodes” are supported in vSAN but are not the method for adding a new cluster within VCF automation. The correct approach is deploying a second cluster inside the same workload domain—this reuses the existing management components while meeting the requirement for a new vSAN storage cluster.