A. Tooth enamel
B. Skull
C. Knee cap
D. Rib
Submitted by: ABDUL HAYEE
Enamel is the hardest substance in the human body and contains the highest percentage of minerals, 96%, with water and organic material composing the rest. The primary mineral is hydroxyapatite, which is a crystalline calcium phosphate
Correct Answer: Tooth enamel ✔
Last Updated: December 06, 2018