This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Physiology
[{'content': 'Which hormone stimulates respiration? \nSelect and explain. \nA. Estogon, B. Progesterone, C. Coicosteroids, D. Prolactine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Progesterone a steroid sex hormone that is the principal progestational agent; it plays a major pa in the menstrual cycle. During the maturation of the secondary oocyte (ovum), estrogen, the principal female sex hormone, is produced at a high rate.Ref: Ganong&;s review of medical physiology, 23ed edition, page no: 418', 'role': 'assistant'}]