Answer:
D. Colonoscopy
Step-by-step explanation:
Colon is the large intestine which absorbs water and minerals from the ingested food and removes the undigested food through rectum. Diverculum is a small tissue sac or polyp formed inside the colon. The condition of having Divercula is called as Diverticulosis.
Diverticulosis causes abdominal pain, constipation, diarrhoea and sometimes bleeding in most people. Some people do not even get any symptoms of having it. The presence of divercula is seen through colonoscopy.