D. Securities and exchange commission
Muscles are also necessary for movement: They're the masses of tough, elastic tissue that pull our bones when we move. Together, our bones, muscles, and joints — along with tendons, ligaments, and cartilage — form our musculoskeletal system and enable us to do everyday physical activities.
Cultural factor, ideational factor, political factor, economic factor
Answer:
It is the Cardio one as it has to do with the heart.
