Fibre is important in the diet because it

  1. provides most of our energy
  2. builds muscle
  3. is needed to make haemoglobin
  4. helps food move along the gut and prevents constipation
Answer

D) helps food move along the gut and prevents constipation

Fibre adds bulk for peristalsis. O Level Biology · Topic 8 Human Nutrition · 8.1 Diet

Biology MCQ · More O Level Biology: Human Nutrition MCQs · Practise