The correct answer is B. full virtualization.
In full virtualization, the virtual machine simulates hardware, so it can be independent of the underlying system hardware. This means that the virtual machine can run on any system that has a compatible hypervisor, regardless of the underlying hardware.
Paravirtualization is a technique that allows a virtual machine to run more efficiently by modifying the guest operating system to cooperate with the hypervisor. This can improve performance by reducing the amount of overhead required to run the virtual machine.
Emulation is a technique that allows a computer to run software that was written for another computer. This is done by translating the instructions of the original program into instructions that can be executed by the target computer. Emulation can be slower than full virtualization or paravirtualization, but it can be used to run software that cannot be run in other ways.
None of the mentioned is not the correct answer because it does not describe any of the techniques listed above.