What is the main function of an operating system?

The main function of an operating system is to manage computer hardware and software resources effectively. This includes coordinating the use of the computer's hardware components such as the CPU, memory, disk drives, and peripheral devices, as well as managing software applications that run on the system.

An operating system acts as an intermediary between users and the computer hardware, enabling users to interact with the system through a user interface while simultaneously allowing applications to utilize hardware resources without directly accessing them. This resource management ensures that processes are prioritized and run efficiently, maintaining system stability and performance.

By understanding the role of an operating system in managing both hardware and software, one can appreciate its significance in the overall functionality of computers. This central function makes it clear why other options, which focus on internet access, application management, or antivirus protection, are secondary features or services that an operating system may provide but do not encompass its primary purpose.