[求助] GWD13-11, 从来没有过which的讨论

Q11:

A South American bird that forages for winged termites and other small insects while swinging upside down from the foliage of tall trees, the graveteiro belongs to the ovenbird family, a group of New World tropical birds that includes more than 230 species and that are represented in virtually every kind of habitat.

  A. eteiro belongs to the ovenbird family, a group of New World tropical birds that includes  more than 230 species and that are
   B. graveteiro belongs to the ovenbird family, a group of New World tropical birds that includes more than 230 species and is
   C. graveteiro belongs to the ovenbird family, a group of New World tropical birds that include more than 230 species and is
   D. graveteiro, which belongs to the ovenbird family, a group of New World tropical birds that includes more than 230 species and that are
   E. graveteiro, which belongs to the ovenbird family, a group of New World tropical birds that includes more than 230 species and is

答案是b

请问nn们，E中使用which为什么错呢？