The blood has the job of moving materials such as food molecules, vitamins, water, gases, and waste products through the body. Cells throughout the body exchange many substances with blood. However, some organs move materials into and out of the blood. Diagrams 1 and 2 below show parts of the lungs and small intestine. The main function of each of these organs is to move materials into or out of the blood. Which student below correctly identifies the systems that work most closely together to accomplish this task?
Student A thinks that the cardiovascular, immune and digestive systems work together to move materials into and out of the blood
Student B thinks that the immune, nervous and digestive systems work together to move materials into and out of the blood
Student C thinks that the cardiovascular, digestive and respiratory systems work together to move materials into and out of the blood
Student D thinks that the respiratory, muscular and nervous systems work together to move materials into and out of the blood

What is your claim? Identify the student that selected the organ systems that work most closely to move materials into and out of the blood.
What is your evidence? Cite evidence from the information provided to support your answer.
What is your reasoning? Explain how your evidence supports your claim.