I believe the answer is A. <span> fluoride
American Academy of Pediatric Dentistry stated that Toothpaste that contains fluoride is proven to prevent tooth Decay.
This happens because Flouride would slow down the breakdown of Enamel and would make our teeth much more resistant to Acid.</span>
Aerobic Exercises is the answer
Eggs do not grow, they are produced by other animals. Such as chickens.
