You are presented with the question "Rotating vanes move air to do what to a computer?" and the following answer choices: 
- cool it
 - improve
 - heat
 - stop it
 - dangerous
 - launch it
 - warm it
 - wind

Now knowing that the vanes rotating in an electric fan causes air to move and many computer Cases cool down temperature by using Cooling Fan, choose the best answer.


 

 cool it        