Correct answer is D. https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-with-tanzu-concepts-planning/GUID-3E4E6039-BD24-4C40-8575-5AA0EECBBBEC.html Spherelet. An additional process called Spherelet is created on each host. It is a kubelet that is ported natively to ESXi and allows the ESXi host to become part of the Kubernetes cluster.

D is the correct About Spherelets A Spherelet is a kubelet that enables ESXi hosts to form a Kubernetes cluster. The Spherelet performs the following functions: • Communicates with the control plane VMs • Manages node configuration • Starts vSphere pods • Monitors vSphere pods on the other hand, Supervisor Cluster Control Plane The supervisor cluster deploys a set of three control plane VMs that provide API access to the supervisor cluster. The control plane VM serves as an endpoint for users to manage their namespaces using the familiar kubectl CLI. From VMware Cloud Foundation: Deploy, Configure, Manage [V5.0] Lesson Book

I would say C https://docs.vmware.com/en/VMware-vSphere/7.0/vmware-vsphere-with-tanzu/GUID-2581B3E5-6A80-4306-B88E-35DE6AC81008.html

B. The Spherelet runs as an agent on the vCenter server of the Tanzu-enabled VCF workload domain.