Windows 98
Windows NT
Windows XP
MS DOS
Answer is Wrong!
Answer is Right!
The correct answer is D. MS DOS.
MS-DOS (Microsoft Disk Operating System) is a single-tasking operating system, which means that it can only run one program at a time. This is in contrast to multitasking operating systems, which can run multiple programs at the same time.
Windows 98, Windows NT, and Windows
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XP are all multitasking operating systems. They can run multiple programs at the same time by using a technique called time slicing. Time slicing divides the available processing time into small slices, and each program is given a slice of time to run. This process is repeated very quickly, so it appears that all of the programs are running at the same time.
MS-DOS does not use time slicing. Instead, it uses a technique called cooperative multitasking. In cooperative multitasking, each program is responsible for giving up control to the operating system when it is finished with its turn to run. If a program does not give up control, the operating system cannot run any other programs. This can lead to programs freezing or locking up.
In conclusion, MS-DOS is a single-tasking operating system, while Windows 98, Windows NT, and Windows XP are all multitasking operating systems.