Question

multiple choice question
what bone(s) form(s) the upper jaw?
maxillae
mandible
vomer
ethmoid
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Explanation:

The maxillae are the bones that form the upper - jaw. The mandible is the lower - jaw bone. The vomer is a bone in the nasal cavity, and the ethmoid is also a bone in the nasal cavity and part of the skull base.

Answer:

A. maxillae