The correct option is C Hyoid apparatus
Hyoid apparatus is located on the floor of the buccal cavity and in between the two arms of the mandibular arch. The hyoid apparatus provides a surface for the attachment of tongue muscles and respiratory muscles. Thus, the hyoid apparatus indirectly helps in the ingestion of food. The hyoid apparatus brings about an oscillating movement of the floor or the buccal cavity during breathing.
Thus, the correct answer is an option D.