Answer: B) Nephrologist
Explanation: Dialysis is a medical procedure used to treat patients with kidney failure or impaired kidney function. Nephrologists are physicians who specialize in the diagnosis and treatment of kidney diseases and disorders. They are the medical experts who oversee and manage the care of patients receiving dialysis.
Nephrologists are responsible for assessing patients' kidney function, determining the appropriate dialysis treatment plan, and monitoring patients' progress during dialysis. They work closely with other healthcare professionals, including medical assistants, to ensure the smooth operation of the dialysis unit and provide comprehensive care to patients.