You are presented with the question "An electrical device can be powered with what device?" and the following answer choices: 
- direct energy
 - electrically
 - broken
 - electroverse
 - hydrogen and oxygen
 - operated
 - electromagnetic energy
 - electro-chemical

Now knowing that powering an electrical device with a battery requires a path for electricity to flow through a closed circuit and batteries are electro-chemical devices, choose the best answer.


 

        electro-chemical 