Eco-travellers have to prevent or minimize any negative impacts on the environment.

5/20

Eco-travellers are not required to protect the environment.

Eco-travellers are encouraged not to have any negative impacts on the environment.

It is eco-travellers' responsibility to prevent or minimize any negative impacts on the environment.

Eco-travellers have never had any negative impacts on the environment.

Giải thích

Đáp án đúng là: C

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