Question

All of the following materials handled in vehicle maintenance and recycling can be toxic to fish, wildlife and humans, EXCEPT: A) Antifreeze B) Compressed air C) Batteries D) Paint

Answer 1

B) Compressed air
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Answer 2

The correct answer is B: Compressed Air.

All of the other answers (Antifreeze, Batteries and Paint) are products manufactured by people and thus, they can contain toxic chemicals, while Compressed Air is just natural air that was kept under pressure (more pressure than atmospheric pressure) in order to give it some usage in industry.