The correct option is B Epiglottis
The epiglottis is a leaf-shaped flap of cartilage located behind the tongue, at the top of the larynx, or voice box. The main function of the epiglottis is to seal off the windpipe during eating, so that food is not accidentally inhaled.
The tongue is vital for chewing and swallowing food, as well as for speech.
The diaphragm is attached to the spine, ribs, and sternum and is the main muscle of respiration, playing a very important role in the breathing process.
The bones of the head and neck play the vital role of supporting the brain, sensory organs, nerves, and blood vessels of the head and protecting these structures from mechanical damage.