Step 1: Understanding the Microsoft Word shortcuts.
In Microsoft Word, each of these tasks is assigned a shortcut:
- To create a new document, you use the shortcut \texttt{Ctrl + N}.
- To save a document, the shortcut is \texttt{Ctrl + S}.
- To undo the last action, you use the shortcut \texttt{Ctrl + Z}.
Step 2: Analyzing the given options.
- Option (A) correctly matches \texttt{Ctrl + N} with creating a new document, \texttt{Ctrl + S} with saving, and \texttt{Ctrl + Z} with undoing an action.
- Other options mix up these shortcuts, making them incorrect.
Step 3: Conclusion.
Thus, the correct answer is (A) A → Ctrl + N; B → Ctrl + S; C → Ctrl + Z.
Final Answer: A → Ctrl + N; B → Ctrl + S; C → Ctrl + Z.