(A) Ctrl +Y
(B) Ctrl +Z
(C) Ctrl+X
(D) Ctrl+C
🧠 Explanation:
- In **Microsoft Word**, the Undo function is used to reverse the last action or series of actions.
- The shortcut for Undo is **Ctrl + Z**.
- This is a commonly used command to quickly correct mistakes while typing or formatting.
- It helps enhance productivity by allowing users to go back step-by-step through their changes.