You are presented with the quiz "Powering a device with a battery requires a path for electrons to flow through  " 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "powering an electrical device with a battery requires a path for electricity to flow through a closed circuit" and "an electrical current is a flow of electrons". 

So, what's the best answer to the question?


 

      a closed circuit     