What is the primary function of the skeletal system?

The primary function of the skeletal system is to support and protect the body. The skeletal system is composed of bones, cartilage, and ligaments that create a framework for the body, facilitating overall structure and shape. It provides support for soft tissues and organs, ensuring they maintain their proper position and function within the body. Additionally, the bones act as a protective barrier for vital organs, such as the skull protecting the brain and the rib cage safeguarding the heart and lungs.

This support and protective role is critical for maintaining homeostasis and allowing for movement when muscles contract against the skeletal framework. The skeletal system also plays a role in producing blood cells and storing minerals, which are important functions but secondary to its primary role in support and protection. The other options, while important body functions, do not relate directly to the primary purpose of the skeletal system. Therefore, the correct answer emphasizes the fundamental role of the skeletal system in maintaining the structure and integrity of the body.