Final answer:
Albumin is the plasma protein with the highest concentration and the greatest contribution to blood osmotic pressure.
Step-by-step explanation:
Albumin
is the plasma protein that has the highest concentration and contributes the most to blood osmotic pressure. It is synthesized in the liver and serves as a transport vehicle for fatty acids and steroid hormones. Its presence in the blood helps maintain blood volume and pressure. It accounts for approximately 54% of the total plasma protein content and has a concentration range of 3.5-5.5 gms/100 ml.