Final answer:
The Crosscutting Concept that best describes the circulatory system as involving the heart, blood, and blood vessels working together to pump blood throughout the body is Systems and System Models.
Step-by-step explanation:
The Crosscutting Concept that BEST describes the statement "Your circulatory system pumps blood throughout your body and includes blood, blood vessels, and your heart" is B) Systems and System Models. This concept focuses on understanding the world as a set of interconnected systems. The statement refers to the structure of the circulatory system as well as its functions, illustrating how the heart (the system's pump) works together with the blood and blood vessels (components of the system) to transport materials like hormones, oxygen, and nutrients throughout the body to maintain homeostasis.