Fact 1: Powering an electrical device with a battery requires a path for electricity to flow through a closed circuit.

Fact 2: An electric circuit is a closed path for electron flow.

Given the two facts above, answer the question "Electron flow allows a battery to do what?" with the following options: 
- power an electrical device
 - disconnect
 - move to different locations
 - heat is produced
 - matter vibrating
 - photosynthesis
 - fuel cell
 - preventing heat transfer


 

 power an electrical device        