This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': 'After laryngectomy, dynamic oesophageal voice is produced from \nSelect and explain. \nA. Pharynx, B. Pharyngoesophageal segment, C. Trachea, D. Buccal mucosa', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Esophageal speech is a skill that can help patients to communicate after a laryngectomy, the most common surgery used for the treatment of laryngeal cancer. ... This hole is called a tracheostoma; the patient uses it to breathe through and cough through after the operation. Ref otolaryngology dhingra 3e', 'role': 'assistant'}]