The correct option is A Proximal tubule
Reabsorption is the process by which nephron removes water and solutes from tubular fluid and return them to circulating blood. Substances such as glucose and amino acids, useful to the body are reabsorbed from the tubule in the proximal tubule. Proximal tubule is the portion of the nephron that lies between Bowman's capsule and the loop of Henle. Thus, the correct option is (A).