Which of the following is system software?

Options:
a) Operating System
b) Word Processor
c) Antivirus Program
d) Database Management System

Correct Answer:
a) Operating System

Explanation:

System software is a type of software designed to manage and control the hardware components of a computer and provide a platform for running application software.

1. Operating System (e.g., Windows, macOS, Linux): The most common example of system software, it manages hardware resources and provides services for other software.
2. Word Processor (e.g., Microsoft Word): Application software, not system software.
3. Antivirus Program (e.g., Norton, McAfee): Utility software, which is sometimes considered a subset of system software but not the core type.
4. Database Management System (e.g., MySQL, Oracle): Also application software.

The operating system is the primary example of system software, essential for the functioning of a computer.