Which of the following is NOT a graphical user interface tool for management?

The correct answer is the Command Line Interface, as it is fundamentally different from a graphical user interface (GUI). A graphical user interface allows users to interact with the computer system through visual elements such as windows, icons, and menus, making it user-friendly and intuitive.

In contrast, the Command Line Interface relies on text commands typed by the user to perform management tasks, which does not utilize graphical elements. This means that while GUIs, like the Control Panel, Device Manager, and system settings applets, provide a visual way to manage system settings and resources, the Command Line Interface does not fit this category and operates purely through text-based input. This highlights the distinction between GUI tools that offer visual interaction and command lines that require users to have knowledge of specific commands for operation.