During the Oropharyngeal Phase of Swallowing, How Is Food Prevented

Multiple Choice

During the oropharyngeal phase of swallowing, how is food prevented from entering the other openings that communicate with the pharynx

A) by elevation of the uvula, which lodges against the back of the throat
B) by closure of the nasopharyngeal sphincter
C) by the epiglottis blocking the opening between the vocal cords
D) by elevation of the larynx and closure of the vocal folds across the laryngeal opening