Final answer:
The small box with upward and downward arrows used for rapid navigation through values by clicking is known as a scroll bar.
Step-by-step explanation:
The small box with an upward- and downward-pointing arrow that enables you to move rapidly through a set of values by clicking is known as a scroll bar. This tool is often found on the side or bottom of a window in a graphical user interface. It allows users to navigate through a long list, document, or webpage by moving the scroll box or clicking on the arrows at the end of the scroll bar. The two other options provided, namely a slider and dropdown menu, serve different functions. A slider allows for adjusting a value within a set range, while a dropdown menu displays a list of options from which one can be selected. A radio button is a control in a form that allows the user to make a single choice among a set of options.