What is the primary function of hemodialysis?

The primary function of hemodialysis is to remove excess fluids and toxins from the blood. This process is essential for individuals with kidney failure, as their kidneys are no longer able to perform this critical function naturally. Hemodialysis acts as an artificial kidney by filtering waste products, electrolytes, and excess fluid from the blood, thus helping to maintain the body’s balance of necessary substances.

While enhancing kidney function through medication and increasing the production of red blood cells may be relevant in the context of managing kidney disease, they do not accurately describe hemodialysis itself. Additionally, providing nutrition directly to the bloodstream pertains more to methods like parenteral nutrition rather than the role of hemodialysis. Thus, the correct understanding of hemodialysis highlights its function in cleaning the blood, making option B the accurate answer.