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': 'All of the following methods are antilarval measures except - \nSelect and explain. \nA. Intermittent irrigation, B. Paris green, C. Gambusia affinis, D. Malathion', 'role': 'user'}, {'content': "Answer: D \nExplanation: Antilarval measures of mosquito control are environmental control- source reduction and minor engineering measures like filling, levelling, intermittent irrigation. chemical control- mineral oils, Paris green, synthetic insecticides (Fenthion, Chlorpyrifos, and Abate). biological control -larvivorous fishes like Gambusia and Lebister are grown in burrow pits, ponds. Park's Textbook of Preventive and Social Medicine, 25th Edition, Pg 833", 'role': 'assistant'}]