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: Anatomy
[{'content': 'Which of the following muscles is responsible for the formation of the posterior tonsillar pillar? \nSelect and explain. \nA. Stylopharyngeus., B. Tensor veli palatine., C. Palatoglossus., D. Palatopharyngeus.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The palatopharyngeus forms the posterior tonsillar pillar. It also functions to close off the nasopharynx and larynx during swallowing. The anterior tonsillar pillar is formed by the palatoglossus.', 'role': 'assistant'}]