Multiple choice

Iron is considered as a vital part of a balanced diet because

  1. it is needed by the bones

  2. it is needed by the nerves

  3. it is needed by the brain

  4. it is needed by the blood

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

Iron is an important component of haemoglobin, the red pigment which combines with oxygen in the red blood cells. So,it is needed by the blood.