What is the undo shortcut on Mac?

• A. Command Z
• B. Command Y
• C. Ctrl Z
• D. Ctrl Y

Answer: (A)

On a Mac, undo is done with the Command key plus Z. The Command key is the main modifier for shortcuts on macOS, and Z has long been paired with undo in virtually all applications. That means pressing Command and Z together will reverse your most recent action, and you can press it again to go further back in the action history.

The other options mix up the modifier or use a Windows-style shortcut. Ctrl Z relies on the Control key, which is not the standard undo key on Macs. Command Y isn’t the universal undo either; in many apps it’s used for other functions or for redo in some programs. Ctrl Y is also a Windows-style redo shortcut and doesn’t perform undo on macOS by default.

If you want to redo an action, the common Mac shortcut is Shift-Command-Z.