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: ENT
The procedure that should precede microlaryngoscopy is: 
Select and explain. 
A. Pharyngoscopy, B. Esophagoscopy, C. Rhinoscopy, D. Laryngoendoscopy
D: Laryngoendoscopy
Answer: D: Laryngoendoscopy 
Explanation: Microlaryngoscopy concentrates mainly on the glottic area in cases where the diagnosis is already established and unlike direct laryngoscopy, is not primarily concerned with other areas of larynx which should have been assessed preoperatively.