In the theoretical hierarchy of development, which level comes after molecular foundations?

• A. Body control
• B. Mastery and application
• C. Cardiovascular sufficiency
• D. External object control

Answer: (C)

Cardiovascular sufficiency is the next step because, once the basic building blocks at the molecular level are in place, the body must be able to deliver oxygen and nutrients to working muscles to support movement. This systemic readiness—efficient circulation, oxygen transport, and energy production—limits or enables all subsequent motor activity. If the cardiovascular system can’t meet these demands, capacity for learning, sustaining effort, and refining skills is constrained, so more advanced levels like body control and later mastery depend on having this foundational level established.