The collecting ducts in the kidney can actively transport water molecules actively into the urine are rendered impermeable to water by aldosterone can absorb water under the control of ADH hormone. are responsible for most of the reabsorption of water that occurs in the kidney

The correct answer is: **can absorb water under the control of ADH hormone.**<br /><br />Here's why:<br /><br />* **Collecting ducts do *not* actively transport water.** Water moves passively via osmosis, following the concentration gradient established by solutes.<br />* **Aldosterone does *not* make the collecting ducts impermeable to water.** Aldosterone primarily acts on the distal convoluted tubule and collecting ducts to increase sodium reabsorption and potassium secretion. Antidiuretic hormone (ADH), also known as vasopressin, is the hormone that increases water permeability of the collecting ducts.<br />* **While a significant amount of water reabsorption occurs in the proximal tubule,** the collecting ducts play a crucial role in *regulating* final water reabsorption. This fine-tuning under the control of ADH determines the final concentration of urine and overall body water balance.<br />