This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
In cases of medical emergencies, an invasive technique
to deal with airway obstruction is: 
Select and explain. 
A. Chest thrust, B. Abdominal thrust, C. Mouth to mouth resuscitation, D. Laryngoscopy
D: Laryngoscopy
Answer: D: Laryngoscopy 
Explanation: None