Final answer:
The mandible is the correct answer as it is the only bone listed that is a facial bone, specifically the lower jawbone.
Step-by-step explanation:
The question is asking which option is a facial bone. The correct answer is b) Mandible. The other options listed are bones that are not part of the face: the occipital bone is part of the cranium, the sternum is part of the thoracic cage, and the clavicle is part of the shoulder girdle. Therefore, the mandible, which is the lower jawbone, is the only bone listed that is actually a facial bone. It plays a crucial role in holding the lower teeth in place and in the process of mastication (chewing).
In reference to other related questions, the parietal bone (a) is a bone of the brain case, the lambdoid suture joins the parietal bone to the occipital bone, the sphenoid bone includes the sella turcica (a), and among other bones, the axial skeleton includes the thoracic cage and vertebral column (a).