The Fundamental of ________ helps students connect their ribs to their scapula.

The Fundamental of Rib Cage Arms is crucial in Pilates as it focuses on the relationship between the ribcage and the scapula, promoting proper alignment and movement. This concept emphasizes the coordination of the upper body, encouraging students to integrate their arms with the scapula and to maintain an open and mobile ribcage. By understanding this connection, students can enhance their overall sense of stability and alignment during exercises, which can improve their performance and reduce the risk of injury.

In contrast, Core Stability focuses more on the engagement and support of the abdominal muscles and pelvic floor, while Pelvic Control pertains to the stability and movement of the pelvis during exercises. Ankle Mobility deals with the range of motion and flexibility in the ankle joint, which does not specifically address the connection between the ribcage and the scapula. Thus, Rib Cage Arms is the most relevant concept for understanding this particular anatomical relationship.