Which of the following is a function of the kidneys

Which of the following is a function of the kidneys

Which of the following is a function of the kidneys?

A. Production of insulin

B. Regulation of blood glucose

C. Filtration of blood and formation of urine

D. Secretion of thyroid hormone

E. Digestion of proteins

Answer: C

Explanation: The primary functions of the kidneys are filtration of blood to remove waste products (urea, creatinine), regulation of fluid and electrolyte balance, acid-base balance, and blood pressure. Insulin is produced by the pancreas, and thyroid hormone by the thyroid gland.