A cloud engineer wants to create a VM named whiz-server-1 with four CPUs. Which of the following commands would he use to create the VM whiz-server-1?

The `gcloud compute instances create` command is used to create a VM, and the `--machine-type=n1-standard-4` flag specifies a predefined machine type that includes 4 vCPUs, along with a certain amount of memory. This is the standard way to define CPU and memory when creating a VM.

The `--cpus` flag is not a valid option for `gcloud compute instances create`; CPU count is specified as part of the machine type.

The `-instancename` flag is not a valid or standard flag for specifying the instance name; the instance name is typically provided as a positional argument.

`n1-4-cpu` is not a valid machine type name; machine types follow patterns like `n1-standard-4` or `e2-medium`.