The correct answer is C. Program.
A general-purpose computer is a computer that can be programmed to carry out a wide range of tasks. This is in contrast to a special-purpose computer, which is designed to perform a specific task. General-purpose computers are typically used for tasks such as word processing, spreadsheets, presentations, and internet browsing.
The program is the set of instructions that tells the computer what to do. The program is stored in the computer’s memory and is executed by the processor. The processor is the part of the computer that carries out the instructions in the program.
The output device is the device that displays the results of the program. The input device is the device that allows the user to enter data into the computer.
The answer to the question is C. Program. This is because the program is what tells the computer what to do. The output device and input device are simply ways for the user to interact with the computer, and the processor is simply the part of the computer that carries out the instructions in the program.