Which of the following is the most commonly used output device for displaying text and graphics on a computer?

The most commonly used output device for displaying text and graphics on a computer is indeed the monitor. Monitors serve as the primary interface between the computer and the user, allowing for real-time visual feedback and interaction with software applications, documents, and multimedia content. They typically provide a high level of detail and clarity thanks to advances in display technology, making them ideal for tasks that require visual engagement, such as reading, design, or gaming.

While printers are essential for producing hard copies of documents, they do not serve the purpose of real-time display. Speakers, on the other hand, are output devices intended for audio output rather than visual data. Projectors, while useful for larger presentations and group settings, are not as commonly used for personal or individual computer use compared to monitors. Monitors thus represent the most direct and frequent means of displaying information on a computer, making them a fundamental component in the computing experience.