The plasma protein that helps maintain blood volume by pulling tissue fluid into capillaries is albumin.
1. Albumin is the most abundant protein in blood plasma.
2. It plays a crucial role in maintaining the oncotic pressure in blood vessels, which is essential for keeping fluid within the blood vessels.
3. This oncotic pressure helps to pull tissue fluid (interstitial fluid) from the tissues into the capillaries, preventing excessive fluid buildup in tissues and maintaining blood volume.
4. As a result, albumin helps to regulate blood pressure and ensure proper circulation of nutrients and waste products throughout the body.
Therefore, in the context of the question, the correct answer is b. albumin.
