The correct answer is option 'C) Shutdown'.

Explanation:

Shutting down a computer means turning off all its processes and shutting down the operating system. This is typically done when you have finished your work and want to completely power off the computer.

To shut down the computer, you need to follow these steps:

1. Click on the 'Start' button: The 'Start' button is usually located at the bottom left corner of the screen, represented by the Windows logo. It is a clickable button that opens up the Start menu.

2. Open the 'Power' menu: Once you click on the 'Start' button, a menu will appear. Look for the 'Power' option in the menu. The 'Power' option usually has an icon that resembles a circle with a vertical line in the middle, representing the power symbol.

3. Click on the 'Shutdown' option: After opening the 'Power' menu, you will see several options such as 'Shutdown', 'Restart', 'Sleep', and 'Hibernate'. To shut down the computer, click on the 'Shutdown' option.

4. Wait for the computer to shut down: After clicking on the 'Shutdown' option, the computer will initiate the shutdown process. It will close all open applications and save any necessary data before powering off.

5. Verify that the computer is shut down: Once the computer has completed the shutdown process, the screen will turn off, and you may hear the computer fans stop running. At this point, the computer is completely shut down.

It is important to note that shutting down the computer properly is necessary to ensure that all files are saved and that the operating system is not abruptly interrupted. This can help prevent data loss and ensure the longevity of your computer's hardware.