A) Rib
B) Skull bones
C) Tooth Enamel
D) None of these
🧠 Explanation:
Tooth enamel is the hardest substance in the human body, covering teeth to protect them from damage. It’s stronger than bone, helping us chew tough foods. In Pakistan, dental health is studied to promote hygiene. Enamel’s importance lies in preventing tooth decay, ensuring strong teeth for eating and smiling, especially important for kids and adults in daily life.