<span>sensorimotor , preoperational ,concrete operational, and formal operational</span>
Grains have a lot of nutritional value but grains are very rich in.
A. Carbohydrates.
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>
The answer to this is letter B
