<prompt> Which among the following increases Iron absorption?Vitamin-CPhytic acidFibre dietPhosphates  <response>: Most of the iron in the diet is in the ferric Fe3 form, whereas it is the ferrous Fe2 form that is absorbed. Fe3 reductase activity is associated with the iron transpoer in the brush borders of the enterocytes. Gastric secretions dissolve the iron and permit it to form soluble complexes with ascorbic acid and other substances that aid its reduction to the Fe2 form.So vitamin C increases Iron absorption. Ref : Barrett K.E., Barman S.M., Boitano S., Brooks H.L. 2012. Chapter 26. Digestion, Absorption, Nutritional Principles. In K.E. Barrett, S.M. Barman, S. Boitano, H.L. Brooks Eds, Ganongs Review of Medical Physiology, 24e. 