Concept:The human skeletal system is the structural framework made up of living tissues that support and protect the body.
Explanation:The skeletal system in humans primarily consists of bones and joints.
Bones provide support, shape, and protection for internal organs.
Joints are the points where two or more bones meet, allowing movement and flexibility.
Cartilage, ligaments, and tendons assist the skeleton, but they are not its main structural parts.
Blood vessels, muscles, and nerves belong to other body systems.
Therefore, the correct pair of components is bones and joints.
Answer:D. Bones and joints