Final answer:
The circulatory system is responsible for transporting plasma to the kidneys, where waste products and excess water are filtered out and excreted as urine.
Step-by-step explanation:
The circulatory system is mainly responsible for the transport of plasma to the kidneys. The circulatory system consists of the heart, blood vessels, and blood. It transports oxygen, nutrients, hormones, and other substances throughout the body, including plasma, which is the liquid component of blood.
Plasma contains water, electrolytes, proteins, hormones, and waste products. When blood circulates through the kidneys, they filter out waste products and excess water from the plasma, which are then excreted as urine.