Which of the following is an example of an output device?

An output device is a piece of hardware that conveys information to the user after processing. The correct answer, which identifies a speaker as an output device, highlights its role in converting digital signals into sound, enabling users to hear audio outputs from computers, music devices, or other electronic systems.

Monitors also serve as output devices by displaying visual content to users, such as images, videos, and text. They project information in a format that is easily perceived visually, similar to how speakers translate data into audible signals. However, the focus of this question is specifically on the option selected.

Other options, like keyboards and scanners, function differently; keyboards are input devices that allow users to interact with the computer by entering data, while scanners convert physical documents into digital format, also making them input devices. Understanding these distinctions is crucial when identifying the various types of devices based on their function in data processing and presentation.