Answer:
The correct answer is option D, that is, the skeleton provides support and the muscles move the bones.
Step-by-step explanation:
The musculoskeletal system provides support, form, movement, and stability to the body. It is formed of the bones of the skeleton, cartilage, muscles, ligaments, tendons, joints, and other kinds of connective tissue, which binds and supports the tissues and organs in combination.
The skeleton offers support, and the muscles in the given case, that is, in her legs gets contract and relax in order to move the bones. They function in pairs of extensors and flexors so they possess the tendency to pull back the bones.