Why cant man prevent the world from being polluted？A．It"s because there are many developin

Why cant man prevent the world from being polluted？

A．It"s because there are many developing nations.

B．It"s because people use too many man-made materials.

C．It"s because we have more and more industry.

D．It"s because we are building more vehicles.

请帮忙给出正确答案和分析，谢谢！

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