The skeletal system includes bones, cartilage, ligaments, and joints, and provides protection, support, and movement.

The skeletal system includes bones, cartilage, ligaments, and joints, and provides protection, support, and movement.

• A. Muscles And Tendons
• B. Bones, Cartilage, Ligaments, And Joints, Providing Protection, Support, And Movement
• C. Nerves And Blood Vessels
• D. Lungs And Airways

Answer: (B)

The main idea here is what makes up the skeletal system and what it does for the body. The skeleton isn't just bones; cartilage cushions joints, ligaments connect bones to stabilize joints, and joints themselves allow movement. Together these parts provide protection (like the skull shielding the brain and the rib cage guarding the heart and lungs), support the body’s shape, and serve as levers for movement when muscles pull on them. Other options point to different systems—muscles and tendons belong to the muscular system, while nerves, blood vessels, and the lungs are part of the nervous/circulatory/respiratory systems—so they don’t describe the skeletal system’s components and functions.

The main idea here is what makes up the skeletal system and what it does for the body. The skeleton isn't just bones; cartilage cushions joints, ligaments connect bones to stabilize joints, and joints themselves allow movement. Together these parts provide protection (like the skull shielding the brain and the rib cage guarding the heart and lungs), support the body’s shape, and serve as levers for movement when muscles pull on them. Other options point to different systems—muscles and tendons belong to the muscular system, while nerves, blood vessels, and the lungs are part of the nervous/circulatory/respiratory systems—so they don’t describe the skeletal system’s components and functions.