Multiple choice

This mineral helps prevent tooth decay and is found in toothpaste and tap water

  1. iron

  2. riboflavin

  3. phosphorus

  4. flourine

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fluoride (derived from fluorine) strengthens tooth enamel and helps prevent dental cavities (tooth decay), which is why it is commonly added to public water supplies and toothpaste.