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: Anatomy
[{'content': 'Function of larynx \nSelect and explain. \nA. Speech, B. Protection of airway, C. Conduit of air, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref BDC volume3,6th edition pg 252The larynx is the organ for production of voice or phonation.It is also an air passage and acts as a sphincter at the inlet of the lower respiratory passages.The upper respiratory passages include nose and oral cavityNOTES; Our speech is guided and controlled by cerebral coex.', 'role': 'assistant'}]