Multiple choice A key that turns on a function the first time it is used, and off, the second time is start key shutdown key F1 key Toggle key Reveal answer Fill a bubble to check yourself D Correct answer Explanation A toggle key is designed to turn a function on the first time it's pressed and off the second time, alternating between two states. Examples include the Caps Lock (capital letters on/off), Num Lock (numeric keypad on/off), and Scroll Lock keys.