Which key is primarily used for correcting the last written character?

The Backspace key is primarily used to correct the last written character. When you press the Backspace key, it deletes the character immediately to the left of the cursor, allowing you to remove typos or incorrect entries quickly. This function is essential in word processing and data entry tasks, enabling efficient editing and ensuring that the text is accurate without having to retype it.

Looking at the other options, the Enter key is used primarily to submit text or execute commands rather than correcting errors. The Tab key is used for moving the cursor to the next tab stop, which facilitates formatting rather than editing. The Home key, on the other hand, moves the cursor to the beginning of the line or document but does not delete any characters. Thus, the Backspace key stands out as the most appropriate key for this particular function.