Which of the following is a promise advertisers cannot make promoting their fitness product?

"you can improve your cardio with our three days per week dance lessons."
"you can strengthen your core completing the ab work series."
"target your belly fat to lose weight there first."
"shape and tone with our muscular endurance videos."

"Target your belly fat to lose weight there first."
 Of the four, this is what advertisers cannot make as a promise when it comes to promoting their fitness product. There is simply no guarantee that anyone who uses their product would lose weight. And should they lose weight, there's no guarantee that the first to be shed off would be the belly fat area.

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.