Concept:Osmoregulation is the process that maintains the balance of water and dissolved solutes in body fluids like blood.Explanation:The kidneys help control the amount of water and solutes in the blood.This process keeps the internal fluid balance stable.The correct term for this regulation is osmoregulation.Other options such as hemolysis, diffusion, and turgidity do not describe this blood-regulating process.Answer:D. osmoregulation