Answer: option D.
Plasma proteins.
Explanation:
Filtration is the transfer of water and solutes like glucose, ions, amino acids from the plasma to the renal tubules in the renal corpsicule plasma . Renal corpsicule help to filter blood. The fluid present in the blood in the glomerulus is pass to the Bowman's capsule to form glomerular filtrate , plasma protein do not enter Bowman's capsule. The filtrate is processed to form urine in the nephron.