Correct option is A
● A toggle key is a key that switches a particular function on and off each time it is pressed.
● Caps Lock toggles between uppercase and lowercase letters.
● Insert toggles between insert mode and overwrite mode while typing.
● Toggle keys remain active until they are pressed again.
● Caps Lock is commonly used to type continuously in uppercase letters.
● Insert key changes the way text is entered in many text editors.
● Num Lock and Scroll Lock are also examples of toggle keys.
● Toggle keys help control typing and cursor behavior efficiently.
● Shift is not a toggle key; it works only while being pressed.
● Ctrl is a modifier key and functions only in combination with other keys.
● Shift and Ctrl do not change states permanently, so they are not toggle keys.