Answer:
1. The GUI, graphical user interface, is a form of user interface that allows users to interact with electronic devices through graphical icons and audio indicator such as primary notation, instead of text-based UIs, typed command labels or text navigation
2.Fluent Ribbon User Interface
The Fluent interface makes it easier to find powerful features by replacing menus and toolbars with a Ribbon that organizes and presents capabilities in a way that corresponds more directly to how people work.
3.A command-line interface allows the user to interact with the computer by typing in commands . The computer displays a prompt, the user keys in the command and presses enter or return. In the early days of personal computers, all PCs used command-line interfaces
