Which option describes a VM best?

A virtual machine (VM) is an operating system that is running on hardware but is not directly attached to the hardware. It is decoupled from the hardware through the use of a hypervisor. The hypervisor creates an abstraction layer between the hardware and the operating system. An operating system that runs directly on hardware is not classified as a virtual machine since it monopolizes the hardware. An operating system that is running with dedicated hardware is not classified as a virtual machine because it has dedicated hardware. An operating system that is running on reduced hardware features is not classified as a VM because it still runs directly on the hardware.