gwd13-11，
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？ | 
