To delete a VI Workload Domain from a VMware Cloud Foundation environment, you must follow a sequence of operations that ensures resources are properly decommissioned in a manner that avoids dependency conflicts. Firstly, migrate the VMs to ensure that data is not lost and workloads are continued. Secondly, remove the NSX Edge clusters to eliminate any logical networks associated with the workload domain. Thirdly, remove the Workload Domain itself to eliminate configurations and policies. Fourthly, decommission the physical hosts as they are no longer needed after the workload domain is removed. Finally, delete the network pool as the hosts have been decommissioned and no longer use the network pool. This specific and ordered sequence is critical to avoid issues, making option A the correct procedure.