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.
New genetic evidence—together with recent studies of elephants’ skeletons, tusks, and other anatomical features—provide compelling support for classifyingAfrica’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
为什么答案是D而不是E呢?是不是有provide sth. for doing sth的固定用法呢?