When Giving Emergency Treatment for a Heatstroke Victim, What Is

When giving emergency treatment for a heatstroke victim, what is the most important directive?

A) Replacing the victim's fluids quickly
B) Lowering the victim's body temperature by use of cool sponges
C) Calling an ambulance
D) Lowering the victim's body temperature by immersing him or her in a tub of ice water and transporting the victim to a hospital via ambulance