Polar bear are nearly undetectable by infrared camera's, due to their transparent fur.
B
Correct answer
Explanation
Polar bears appear nearly invisible to infrared cameras not because of transparent fur, but because of exceptional thermal insulation. Their thick blubber and hollow guard hairs trap heat so effectively that very little body heat escapes to the surface. This makes them show up as cold (same temperature as surrounding ice) in infrared imaging, effectively camouflaging them from thermal detection.