This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Surgery
What is the narrowest pa of the respiratory tract in children? 
Select and explain. 
A. Glottis, B. Subglottic area, C. Trachea, D. Carina
B: Subglottic area
Answer: B: Subglottic area 
Explanation: The narrowest pa of the adult airway is the vocal cords In children, the narrowest pa is the cricoid cailage located in the subglottic area of the larynx. Ref: Internet