What is the function of the skeletal system?

The skeletal system is primarily responsible for providing structural support to the body, which includes maintaining posture and the overall shape of the body. It serves as a protective framework for vital organs, such as the heart, lungs, and brain, preventing injury through its rigid structure. Additionally, the skeletal system plays a crucial role in facilitating movement by serving as attachment points for muscles. When muscles contract, they pull on bones, creating movement at the joints. This combination of support, protection, and movement facilitation is fundamental to the overall functioning of the human body.

The functions of breathing, hormone production, and nutrient transportation are attributed to other systems. The respiratory system assists with breathing, the endocrine system is responsible for hormone production, and the circulatory system manages the transportation of nutrients. Thus, the primary roles of the skeletal system are encapsulated in the correct answer.