What is the purpose of the author in writing the passage?A.To call on people to reduce car

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What is the purpose of the author in writing the passage?

A.To call on people to reduce carbon footprints.

B.To offer tips on how to live a low-carbon life.

C.To introduce the research on carbon footprints.

D.To clear up misunderstandings about carbon emission.

请帮忙给出正确答案和分析,谢谢!

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