…… system is built directly on the hardware A. Environment B. System C. Operating D. None

The correct answer is C. Operating.

An operating system is a software program that manages a computer’s hardware and software resources and provides a platform for running other programs. It is the first program that runs when a computer is turned on, and it remains in memory until the computer is turned off.

The operating system performs a number of essential functions, including:

• Managing the computer’s hardware resources, such as the CPU, memory, and storage devices.
• Providing a user interface, which allows users to interact with the computer.
• Managing files and directories.
• Running applications.

The operating system is a

The other options are incorrect because:

• Environment is a general term that can refer to the physical surroundings of something, or to the conditions that affect the development or growth of something. In the context of computer systems, the environment can refer to the hardware and software that make up the system.
• System is a general term that can refer to a set of interrelated elements that function together as a whole. In the context of computer systems, a system can refer to the hardware, software, and data that make up the system.
• None is not a valid option.