How many days can the body survive without water?
a. 2-3
b. 5-6
c. 8-10
d. 10-12

D. 10-12 depending on where you are because if you are in a desert its hotter and how hyderated you are 

If it's a smaller child or infant, place one on the middle of the chest and on the child's back. (if it is a bigger child with enough room for two, place one on the upper right/your left of the chest, and one on the lower left/your right) the pads should never touch each other.