Answer:
Did you ever gwt an answer i need help with this same question
Explanation:
It is B , I know this thanks to the fact I took PE and our teacher teach us about the body !
Endorphins reducing stress levels
Electricity is the manifestation of traveling currents. These currents however are unable to move unless one were to complete a "circuit" (Word you are looking for). If the circuit is not completed electricity doesn't travel.