The amount of each of the food groups needed for an individual person each day depends on what following factors? (choose all that apply)

Ibelieve this would be an obstacle.

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.