A reliable method here is to translate the scenario into Nutanix terms—VPC routing, external connectivity, policy scope, identity mapping, or upgrade readiness—and then choose the answer that directly addresses that domain. The correct response is B, meaning “Configure a routing policy in the VPC to deny external traffic to and from the database subnet.”. The winning option is the one tied to the native Nutanix object or control that governs the outcome described in the scenario. In practice, this falls into virtual network design: VPC structure, subnet type, external network behavior, routing intent, and address exposure are what determine the result. By contrast, A is not appropriate because NAT changes addressing behavior and does not solve the routing or policy condition described in the scenario. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. In practice, administrators who anchor their decisions to Prism Central constructs—such as VPCs, external networks, ERPs, categories, and policy modes—arrive at the correct answer faster and avoid unnecessary changes. A strong exam habit is to ask which Nutanix construct would have to change for the symptom.