明天考试，今晚再问最后一道语法题，求解~

Q29: GWD-13-11A SouthAmerican bird that forages for winged termites and other small insects whileswinging upside down form the foliage of tall trees, the graveteiro belongs to the ovenbird family, a group of New World tropical birds that includes more than 230species and that are represented invirtually every kind of habitat.

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


答案是B，我选的E，很羞愧的木有读懂句子意思。。。剪不断，理还乱~~
望高手解答~~thx

句子的大意是一种捕食某种虫子的鸟，属于一种新世界的鸟类家族，这个鸟类家族包括……种鸟以及……
里面有较多单词不认识，但是框架是这样的

从框架上看，DE不对，因为会发现句子没有主干的主谓结构
AC，从句中单复数不统一
其次，“that includes more than 230species and that are represented invirtually every kind of habitat.”修饰group，所以用单数