What is the shortcut key to “Undo” the last action in a document?

The correct answer is: B. Ctrl + Z

Ctrl + Z is the shortcut key to “Undo” the last action in a document. It is a universal shortcut that works in most applications.

Ctrl + X is the shortcut key to “Cut” the selected text.

Ctrl + Y is the shortcut key to “Redo” the last action that was undone.

Ctrl + U is the shortcut key to “Underline” text.

E. None of these is the correct answer.