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
[{'content': "Hynes pharyngoplasty is used to improve a child's - \nSelect and explain. \nA. Appearance, B. Teething, C. Speech, D. Feeding", 'role': 'user'}, {'content': 'Answer: C \nExplanation: • Used for the treatment of Velopharyngeal incompetence leading to speech problems', 'role': 'assistant'}]