What are the main components of the skeletal system?

The correct answer includes bones, cartilage, ligaments, and tendons, which are indeed the main components of the skeletal system. Bones form the framework of the skeleton and serve various functions such as protection, support, and facilitating movement. Cartilage is a flexible connective tissue that cushions joints and provides structural support, especially in areas like the nose and ears. Ligaments are strong bands of connective tissue that connect bones to other bones at joints, helping to stabilize and support the skeletal structure. Tendons, although primarily associated with the muscular system, connect muscles to bones, allowing for movement and functionality of the skeletal system as a whole.

Understanding this distinction helps clarify the roles of each component in maintaining the integrity and function of the skeletal system. The other options reference components that either partially or incorrectly describe the skeletal system, such as including muscles or fluids that are associated with joint function rather than the skeletal framework itself.