请问哪个选项可以更好地把句子补充完整? The World Wildlife Fund has declared that global war
A、a phenomenon that most scientists agree is caused by human beings in buring fossil fuels
B、a phenomenon that most scientists agree is caused by fossil fuels burned by human beings
C、a phenomenon that most scientists agree is caused by human beings’ buring of fossil fuels
D、a phenomenon that is caused by fossil fuels burned by human beings