What is prevention? increasing productivity at school and work increasing the use of seat belts taking care of sick people taking action to avoid disease and injury

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. 

Awould be the answer