<prompt> Which of the following statement regarding water reabsorption in the tubules?The bulk of water reabsorption occurs secondary to Na reabsorptionMajority to facultative reabsorption occurs in proximal tubuleObligatory reabsorption in ADH dependent.20 of water is always reabsorbed irrespective of water balance  <response>: Water reabsorption occurs along with sodium reabsorption.Ref: Ganong;s review of medical physiology; 24th edition; page no: 685 