A user needs to leave the computer briefly but keep open work available and prevent others from accessing it. Which option best fits?
Answer
Lock
Explanation
### Why this is right
Lock protects the open session from access while keeping the user's work and programs open. It is therefore suitable for a short absence.
### The concept
Power options are not interchangeable. Lock restricts access without ending the session. Log off, Shut down, and Restart end the current session in different ways.
### The other options
- **B. Log off**: ends the session rather than preserving it.
- **C. Shut down**: powers off the computer and closes the session.
- **D. Restart**: closes the session and starts the computer again.
### Remember
For a brief absence with work left open, lock the computer.