Which set of bones make up the facial structure?

The facial structure is primarily composed of bones that specifically form the features of the face itself, which includes the orbits (eye sockets), nasal bones, maxilla (upper jaw), mandible (lower jaw), and zygomatic bones (cheekbones). These bones work together to support the structure of the face, protect the underlying organs such as the eyes and nasal cavity, and assist in functions like chewing and speaking.

Other sets of bones mentioned in the other options are not part of the facial structure. The skull and vertebrae option refers to different areas of the skeletal system, where the vertebrae constitute the spinal column, and the skull encloses the brain but does not specifically denote the facial bones. The ribs and sternum form the thoracic cage, providing protection to the heart and lungs, and the pelvic and shoulder girdles pertain to the components of the appendicular skeleton related to limb attachment, rather than facial structure. Thus, the answer highlighting orbits, nasal bones, maxilla, mandible, and zygomatic bones accurately reflects the bones specifically associated with the facial framework.