This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and health, Subject name: Social & Preventive Medicine
[{'content': 'Housefly transmits- \nSelect and explain. \nA. Typhoid fever, B. Cholera, C. Amoebasis, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: House flies are called poers of infection. M.domestica,M.vicinia are the common house flies. They transmit infections by Mechanical transmission, vomit drop and defaecation. They are vectors of many diseases like Typhoid and paratyphoid fevers, diarrhoeas, dysentery, cholera, gastroenteritis, amoebiasis, helminthic infestations, poliomyelitis, conjunctivitis, trachoma, anthrax, yaws. Park's Textbook of Preventive and Social Medicine, 25th Edition, Pg 834", 'role': 'assistant'}]