Answer: D) all of these answers are correct.
Explanation:
The pharyngeal stage of deglutition are described by the all of the given stages in the options are correct. As, deglutition is the transport of the food and the liquid from the mouth to the stomach. normal deglutition required contraction and the relaxation to the muscles of oral. Basically, it is the another word of swallowing and it aid by the presence of the saliva and the mucus in the organ.