To answer this question, we need to understand the concept of virtualization in operating systems.
Option A) Virtual space - This option is incorrect because the operating system does not create virtual space from the physical computer. Virtual space typically refers to the allocation of memory to processes in order to create the illusion of having more memory than physically available.
Option B) Virtual computers - This option is correct because the operating system creates virtual computers, also known as virtual machines (VMs), from the physical computer. A virtual machine is a software emulation of a physical computer, which allows multiple operating systems to run on a single physical machine.
Option C) Virtual device - This option is incorrect because although the operating system can create virtual devices, such as virtual network adapters or virtual disk drives, these are not created from the physical computer itself.
Option D) None - This option is incorrect because the operating system does create virtual computers from the physical computer.
Therefore, the correct answer is B) Virtual computers. This option is correct because the operating system creates virtual machines from the physical computer.