In the kidney, the structures that filter the blood are the
a.
neurons
b.
bile ducts
c.
nephrons
d.
ureters

The structures in the kidney that filter the blood are called "nephron filters", so the answer is C. Nephrons. This filtering is performed primarily through tiny capillaries in the structure.

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass