Nowadays people are more aware...

Câu hỏi: Nowadays people are more aware that wildlife all over the world is in danger. Many species of animals are threatened, and could easily become (17) ______if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are hunted for their fur or for other valuable parts of their bodies.

A. for

B. such         

C. like          

D. or