一道语法题想确定一下答案，请各位朋友帮个忙！

Tiff323

New genetic evidence—together with recent studies of elephants’ skeletons, tusks, and other anatomical features—provide compelling support for classifying Africa’s forest elephants and its savanna elephants as separate species.

A.    provide compelling support for classifying
B.    provide compelling support for the classification of
C.    provides compelling support to the classification of
D.    provides compelling support for classifying
E.    provides compelling support to classify

答案是选D吗？为什么不是A?

Tiff323

谢谢

manxeon

主谓不匹配。

主语是new evidence， 谓语单数，破折号当中修饰部分全部忽略