Question: What fiber can be found only in warm-blooded animals?\nOptions:\n- (A) teeth\n- (B) birth marks\n- (C) muscle\n- (D) taste buds\n- (E) hair\n- (F) wool\n- (G) sugar\n- (H) fur
Let's be accurate as possible and think step-by-step.
User
Hair is a fiber that is found only in mammals. All mammals are warm-blooded. Hair is a fiber that is found only in warm-blooded animals.
The answer: (E).
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