Concept:
Keyboard shortcuts help users perform operations quickly and efficiently. Ctrl+Z is one of the most frequently used shortcuts across software applications.
Step 1: Understand the Undo operation.
Undo reverses the most recent action performed by the user.
Examples include:
• Removing accidentally typed text.
• Reversing formatting changes.
• Restoring deleted content.
Step 2: Role of Ctrl+Z.
When Ctrl+Z is pressed:
• The previous action is cancelled.
• The document returns to its earlier state.
• Mistakes can be corrected quickly.
Step 3: Differentiate from other shortcuts.
Redo is generally Ctrl+Y.
Save is Ctrl+S.
Delete removes selected content.
Thus Ctrl+Z specifically performs Undo.
Step 4: Conclusion.
Therefore, pressing Ctrl+Z performs the Undo operation.
Hence, option (B) is correct.