What does the backspace key do?

The backspace key is designed specifically to delete the last character that was typed. When pressed, it removes the character immediately to the left of the cursor's current position, effectively allowing the user to correct mistakes or remove unwanted characters without having to retype the entire text. This functionality is essential for efficient text editing, as it provides a quick way to manage and refine written content.

In contrast, options that suggest the backspace key adds a space, moves the cursor to the right, or retypes the last character do not accurately represent the primary function of the backspace key. Understanding the roles of various keys on a keyboard is crucial for effective typing and editing workflow.