(A) Controlling system
(B) Peripheral system
(C) Operating system
(D) All of these
🧠 Explanation:
The organized collection of software that controls the overall operation of a computer is called the **Operating System (OS)**. The OS manages hardware resources, runs applications, and provides an interface between the user and the computer. It handles tasks like file management, memory allocation, and device control, ensuring smooth and efficient functioning. Popular examples include Windows, macOS, and Linux. Understanding the role of the operating system is essential for using computers effectively, as it forms the foundation for all other software and user activities.
