The blood colloid osmotic pressure mostly depends on the

A) concentration of plasma sodium ions.

B) concentration of plasma glucose.

C) concentration of plasma waste products.

D) concentration of plasma proteins.

E) number of red blood cells.

Answer;

D) concentration of plasma proteins.

Explanation; Colloid osmotic pressure is the osmotic pressure resulting from the difference within the extracellular fluid between the protein contents of plasma and interstitial fluid. This pressure is created by the concentration of colloidal proteins in the blood. Its effect on capillary exchange accounts for the reabsorption of water.