Correct option is B
Ans. (b)
Sol. The operating system (OS) is the most essential software that acts as an interface between the hardware and the user. It manages system resources such as the CPU, memory, input/output devices, and software applications. It allows users to interact with the system through commands or graphical user interfaces (GUIs).
Related Info: Windows and Linux are two major types of OS. Windows is user-friendly and GUI-based, widely used in offices and homes. Linux is open-source, preferred in servers and research for its flexibility and security.