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': "The mean radiant temperature is measured by: \nSelect and explain. \nA. Dry bulb thermometer, B. Wet bulb thermometer, C. Six's maximum and minimum thermometer, D. Globe thermometer", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Instruments used in Air temperature Instrument Measures Dry bulb thermometer Air temperature Wet bulb thermometer Air temperature Maximum thermometer Air temperature Minimum thermometer Air temperature Six&;s maximum and minimum thermometer Air temperature Silvered thermometer Air temperature Globe temperature Mean radiant temperature Wet Globe temperature Environmental heat Kata temperature Cooling power of Air; Low air velocities Ref: Park 25th edition Pgno: 783', 'role': 'assistant'}]