Answer :
Final answer:
The epiglottis is the structure of the respiratory system that helps to prevent choking.
Explanation:
The correct answer is Epiglottis. The epiglottis is a flap of cartilage that covers the entrance to the trachea during swallowing, preventing food or liquid from entering the airway and causing choking. It acts as a protective mechanism to ensure that the pathway to the lungs is clear for air to pass through smoothly.
Learn more about respiratory system here:
https://brainly.com/question/4190530
