Which of the following best describes a GUI?

A graphical user interface (GUI) is described as a user interface that utilizes graphical elements to facilitate interaction between the user and the computer system. This includes windows, icons, buttons, and menus, which allow users to perform tasks visually rather than using textual commands. The main advantage of a GUI is that it makes software easier to use for people without technical expertise, as they can interact with visual components rather than needing to remember and type out complex commands.

The other choices describe different types of interfaces. A command line interface relies solely on text input, which may not be intuitive for all users. A text-based interface also exclusively uses text, which limits usability compared to a GUI. A network interface pertains to the communication aspects between computer systems over a network rather than user interaction with applications. Thus, the best description of a GUI is indeed one that emphasizes its graphical aspects and ease of use.