What is the main purpose of an operating system?

The main purpose of an operating system is to manage computer hardware and software resources. An operating system acts as an intermediary between users and the computer hardware, facilitating the execution of programs while ensuring efficient resource allocation. It handles tasks such as managing memory, processing requests, controlling input/output devices, and enabling user interface interactions. This management ensures that different programs and users can operate simultaneously without interfering with each other, optimizing the overall performance and stability of the system.

While creating virtual machines is a function that might be supported by an operating system, it is not the primary purpose. Developing applications is a separate domain that occurs above the operating system level, relying on the resources managed by it. Enhancing internet speeds is also not a core function of an operating system; it primarily involves network software or hardware solutions rather than the operating system itself. Therefore, the essence of an operating system lies in its ability to manage resources effectively, making option B the most accurate choice.