Multiple choice technology operating systems What is the shortcut to redo the last command? Ctrl + R Ctrl + Y Ctrl + Z None Reveal answer Fill a bubble to check yourself B Correct answer Explanation In Windows and most standard applications, Ctrl + Y is the default keyboard shortcut used to redo the last undone action. Ctrl + Z is used for undo, and Ctrl + R is typically used for refreshing a page or aligning text.