What is the primary function of a polar bear's hollow fur?

A) To provide camouflage in snowy environments

B) To help with buoyancy while swimming

C) To trap air for superior insulation against cold

D) To make them appear larger to predators

Explanation

A polar bear's fur is hollow, which allows it to trap a layer of air close to the bear's body. This trapped air acts as an excellent insulator, preventing heat loss in their extremely cold Arctic habitat.

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