Why, according to the passage, is biogas introduced to poor people? A. Because it is easy to use

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Why, according to the passage, is biogas introduced to poor people?

Because it is easy to use

Because it is the largest energy resource available in the countryside and cheap

Because it is not harmful

Because they like it

Giải thích

Đáp án đúng: B

Giải thích: : Dựa vào câu “For many people living in rural areas in developing countries of the world, biogas is the large energy resources available and costs almost nothing. ”