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
The mean radiant temperature is measured by: 
Select and explain. 
A. Dry bulb thermometer, B. Wet bulb thermometer, C. Six's maximum and minimum thermometer, D. Globe thermometer
D: Globe thermometer
Answer: D: Globe thermometer 
Explanation: 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