Concept:System software manages computer hardware and provides a platform for application software.
MS-Office is application software, not system software.
Explanation:System software includes the operating system, compilers, and device drivers.
It acts as a bridge between hardware and user applications.
The operating system is the most common example of system software.
A compiler converts high-level source code into machine code.
A printer driver allows the computer to communicate with the printer.
MS-Office is a collection of productivity tools like Word, Excel, and PowerPoint.
These tools help users perform tasks, so they are application software.
Hence, MS-Office is not system software.
Answer:D. MS-Office