Answer: Option D.
Explanation:
Larynx is an organ located at the neck. It is also called voice box. It is use for breathing,producing sounds and protect the trachea from food passage. There is a cartilage that lies the top of the larynx called epiglottis. During swallowing, the larynx elevates and epiglottis falls on the opening of the larynx thereby preventing food from entering the trachea.