<prompt> A 40 year old male patient presented with mild abdominal pain, mild constipation with a feeling of incomplete evacuation and mucus in stools for the past 4 years. On examination, tenderness is present in left iliac fossa. The most likely diagnosis is:Ulcerative colitisDiveicular disease of the colonIrritable bowel syndromeCarcinoma colon  <response>: Ans. b. Diveicular disease of the colon 