A tragedy hits a small town. The elementary school explodes into flames trapping several classes of second graders. Because the volunteer fire department will take too long to get there, teachers and classified staff remove all the children to safety without considering the danger to themselves. During this crisis, the rescuers' __________ level must have been at an all time high. (Points: 5)
melatonin
testosterone
dopamine
endorphin
I think it is D but not sure