Final answer:
Aldosterone results in the reabsorption of Na⁺ and water into the bloodstream.
Step-by-step explanation:
Aldosterone results in the reabsorption of Na⁺ and therefore also water.
Aldosterone stimulates the uptake of Na⁺ in the distal convoluted tubule and collecting ducts of the kidneys, which leads to the reabsorption of both Na⁺ and water into the bloodstream.
This helps increase blood volume.