Which device allows the user to view or listen to data processed by a computer?

The correct answer is an output device because it is specifically designed to present or communicate the results of computer processing to the user. Output devices convert digital data from the computer into a form that can be perceived by users, such as visual displays or audio. For example, monitors and printers are common output devices that allow users to see visual data or obtain printed documents, whereas speakers enable users to hear audio generated by the computer.

Input devices, on the other hand, serve the purpose of feeding data into the computer system for processing. Common examples include keyboards and mice, which allow users to enter commands or information. Peripheral devices refer to equipment that is connected to the computer but does not refer specifically to the function of showing or producing results. Lastly, networking devices are involved in connecting computers to networks or the internet, facilitating communication rather than displaying or playing back data directly to the user.