What is the function of structure D? 
Definitions:
Gluteal
Pertaining to the gluteus muscles, which are located in the buttocks and are responsible for the movement of the hip and thigh.
Muscular Strength
The maximum force that a muscle or group of muscles can generate during a single contraction, critical for physical health and performance.
Resistance Training
A form of physical activity that involves the use of resistance to induce muscular contraction, building the strength, anaerobic endurance, and size of skeletal muscles.
Endurance
The ability to sustain a physical or mental effort for a long period of time.
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