The correct option is C whole blood minus WBCs, RBCs and platelets
Plasma, also known as blood plasma, appears light-yellowish or straw-colored. It serves as the liquid base for whole blood. Whole blood minus erythrocytes (RBCs), leukocytes (WBCs) and thrombocytes (platelets) make up the plasma. Plasma contains 90-92% water and 6-8% proteins.