The vanes rotating in an electric fan causes air to move, and electricity flows through an electric motor in a fan, causing the fan's blades to turn. Given these facts, what would a turning blade cause among the following options:
- air to move
 - scattered light
 - contamination
 - killing insects
 - air to freeze
 - water to cool down
 - heat energy
 - air to stagnate


 

 air to move        