Listening to a patient's phone conversation is an example of

I don't know if there is a technical term for it but is it Eavesdropping?

The answer is b. increased blood flow reduces nerve sensitivity

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.