What is the correct command to delete a workspace in Terraform?

The command to delete a workspace in Terraform is accurately represented by the choice that specifies "terraform workspace delete." This command is a part of the Terraform CLI and is explicitly designed to remove a specific workspace.

When using this command, you can delete the specified workspace, which is particularly useful for managing and cleaning up unnecessary or unused workspaces in your Terraform setup. It's crucial to note that this command ensures that the resources associated with the workspace are not automatically destroyed; rather, it simply removes the workspace from the Terraform state.

The other options either do not exist in Terraform’s command-line interface or are incorrectly structured. For instance, "terraform workspace remove" is not a valid command, and "terraform delete workspace" does not follow the correct syntax that Terraform requires. By focusing on the correct command structure and semantics given by Terraform's design, it is clear why "terraform workspace delete" is the accurate choice.