What sign is used to erase or kill an entire line you have typed and start you are on a new line (but not display a new prompt)? A. ! B. $ C. # D. @ E. None of the above

The correct answer is Ctrl+U.

Ctrl+U is a keyboard shortcut that erases the current line in a text editor or terminal. It is also known as the “kill line” command.

The other options are incorrect because they do not erase the current line.

• ! is used to execute a shell command.
• $ is the prompt character in many shells.
• # is used to comment out a line of code.
• @ is not a valid keyboard shortcut.

I hope this helps!