Which system covers, shapes, and holds bones in place while allowing movement?

The muscular system is essential for covering, shaping, and stabilizing bones while facilitating movement. Muscle fibers are attached to bones through tendons, and when muscles contract, they pull on the bones, allowing for a wide range of movements. This interaction between muscles and bones enables various bodily functions, such as walking, running, and performing intricate tasks.

Unlike other systems mentioned, the muscular system specifically pertains to the mechanics of movement and posture in relation to the skeletal framework. The cardiovascular system focuses on the circulation of blood and nutrients, the respiratory system is responsible for gas exchange, and the digestive system handles the processing of food. Therefore, the unique function of the muscular system in enabling and controlling movement is what makes it the correct answer in this context.