Why does absorption of digested food occur mainly in the small intestine ?

Explanation

Miximum absorption occurs in small intestine because
(i) It reduces the limen size which ensures that the food stays for longer duration is the small intestine so that proper absorption can take place. Due to this, the absorption of digested food mainly occurs in the small intenstine.
(ii) Inner lining of small intestine the ileum has lots of villi which serves two purposes. It increases the surfaces area to ensure better absorption.
(iii) Wall of intestine is richly supplied with blood vessels (which take the absorbed food to each and every cell of the body).