Q:You are presented with the question "nephrons are the structural and functional units of what?" and the following answer choices: - Something coming from a gland - A compound that donates proton - urine manufacturing organs - Veins and arteries. - critical organs - sensory neurons - food and shelter - the body's largest organ Now knowing that nephrons are the structural and functional units of the kidneys and normally the kidneys manufacture urine, choose the best answer.
A:
urine manufacturing organs