Which key would you press to delete text to the left of the cursor?

The Backspace key is specifically designed to delete text to the left of the cursor. When you press this key, it removes any character that is immediately before the cursor's current position, effectively allowing you to delete text incrementally. This function is essential for correcting errors or removing unwanted text while typing.

In contrast, the other options have distinct functions. The Enter key is used to create a new line or paragraph, enhancing the structure of your text rather than deleting. The Delete key, on the other hand, removes text to the right of the cursor. The Ctrl key is a modifier key that, when used in combination with other keys, typically performs special functions, but it does not have a direct role in deleting text by itself. Thus, the Backspace key is the appropriate choice for the action described in the question.