Which structure is responsible for connecting bones to each other?

• A. Muscles
• B. Tendons
• C. Cartilage
• D. Ligaments

Answer: (D)

Ligaments are the key structures that connect bones to each other. They are made of dense connective tissue and serve to stabilize joints, allowing for both mobility and protection by holding bones in proper alignment during movement. This connection is crucial for maintaining the integrity of the skeletal system and facilitating coordinated movement.

Muscles, while essential for movement, primarily connect to bones through tendons, enabling them to pull on bones to create motion. Cartilage acts more as a cushioning agent between bones, reducing friction and absorbing shock in joints but does not connect bones directly to each other. Hence, ligaments are the definitive structures that fulfill the role of connecting bones, which makes them the correct answer in this context.