Answer:
The correct option is: D. epiglottis
Step-by-step explanation:
The epiglottis is a cartilaginous leaf-shaped structure of the larynx that is composed of elastic cartilage. It's shape is similar to the shape of the purslane leaf and is found in the throat of a human, behind the tongue and the hyoid bone.
It prevents the food from entering the trachea and is covered with the mucous membrane.The stem of epiglottis is attached to the thyroid cartilage.