You are presented with the question "A battery-powered computer requires a what for electricity to flow?" and the following answer choices: 
- direct energy
 - closed circuit
 - kinetic energy
 - broken circuit
 - open air
 - hydrogen and oxygen
 - heat energy
 - open circuit

Now knowing that powering an electrical device with a battery requires a path for electricity to flow through a closed circuit and electrical engineers work on power plants, computers, and other electrical devices, choose the best answer.


 

  closed circuit       