You are presented with the question "Electron flow allows a battery to do what?" and the following answer choices: 
- power an electrical device
 - disconnect
 - move to different locations
 - heat is produced
 - matter vibrating
 - photosynthesis
 - fuel cell
 - preventing heat transfer

Now knowing that powering an electrical device with a battery requires a path for electricity to flow through a closed circuit and an electric circuit is a closed path for electron flow, choose the best answer.


 

 power an electrical device        