Q: You are presented with the quiz "things that have a what are the structural units of the kidneys?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "nephrons are the structural and functional units of the kidneys" and "each nephron has a glomerulus". So, what's the best answer to the question?

Select from the following.
(I) organ;
(II) epidermal;
(III) critical organs;
(IV) it needs them;
(V) bioaerosols;
(VI) sensory neurons;
(VII) glomerulus;
(VIII) layers of fat;
A:
(VII)