Answer: B. Multi-user, multitasking.
Step-by-step explanation:
Multiuser/Multitasking operating system refers to an operating system that's powerful and supports more than one user at a time, and can also perform more than one task at a time.
The operating system allows many users to use the programs which are running concurrently on a single network server. It is the computer operating system that would be best for a large corporation. An example is UNIX.