Read the passage: 'Thermal imaging cameras detect heat signatures emitted by objects, allowing firefighters to locate victims through dense smoke. The technology works by sensing infrared radiation rather than visible light, making it effective even in zero-visibility conditions.' What is the PRIMARY advantage of thermal imaging described?
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A
It is cheaper than traditional flashlights
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B
It can detect victims in zero-visibility smoke conditions
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C
It replaces the need for firefighters to enter buildings
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D
It produces visible light to illuminate dark areas