The answer is B: installs and runs different versions of an operating system on the same computing device
Virtual machines are like guest operating systems or application environments that give you the perception that you are physically connected to a different box. A system virtual machine, for instance, copies all the components and processes of a real computer. It helps the user experiment with different operating systems and applications without the need to install them on your physical hardware.
Correct, you're looking for an outer loop that loops from 0 to 15, and an inner loop from 0 to 50.
The bubble sort makes multiple passes through a list. It compares adjacent items and exchanges those that are out of order. Each pass through the list places the next largest value in its proper place. In essence, each item “bubbles” up to the location where it belongs.
