This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Adenoids, Subject name: ENT
Speech problem after adenoidectomy is due to- 
Select and explain. 
A. Trauma to larynx, B. Velopharyngeal insufficiency, C. Trauma to vocal cord, D. Trauma to superior constrictor
B: Velopharyngeal insufficiency
Answer: B: Velopharyngeal insufficiency 
Explanation: Ans. is 'b' i.e., Velopharyngeal insufficiency o Velopharyngeal insufficiency may occur after adenoidectomyo This causes hypernasality of voice.o It is due to incomplete closure of nasopharynx - abnormal physiological separation of oropharynx from nasopharynx