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': 'Definitive host is one in which the following lives - \nSelect and explain. \nA. Larvae, B. Asexual form, C. Adult form, D. A or B', 'role': 'user'}, {'content': "Answer: C \nExplanation: HOST A host is a person or other animal, including birds and ahropods that affords subsistence or lodgement to an infectious agent under natural conditions. Definitive host (primary host): A host in which parasite attains maturity or passes its sexual stage. Intermediate host(secondary host), A host in which larval or asexual stage is passed. Transpo host- carrier is alive but does not undergo development. Park's textbook of preventive and social medicine.K Park. Edition 23.page no:93", 'role': 'assistant'}]