What is an Operating System (OS) primarily used for?

An Operating System (OS) serves as the fundamental software that manages computer hardware and software resources, acting as a bridge between the user and the computer hardware. It is responsible for executing system-level functions such as handling input from the keyboard, managing memory, processing data, and coordinating tasks between the user's applications and the hardware components.

By controlling the computer and its peripheral devices, the OS ensures that all hardware functions correctly with the provided software, facilitating the execution of programs and enabling users to interact with the system efficiently. This includes managing files, providing a user interface, and allowing communication with external devices like printers and scanners.

While the other options relate to functions that a computer can perform, they do not encapsulate the primary role of an Operating System. Powering down a computer safely is a function performed by the OS but is not its primary purpose. Similarly, storing user data permanently typically involves additional storage solutions managed by the OS, rather than the OS itself being dedicated to this task. Developing programming languages is a separate domain focused on software creation, not indicative of the core responsibilities of an OS.