哪位大牛能帮我解释下这题吗？

deibo

Q4:

Yellow jackets number among the 900 or so species of the world’s socialwasps, wasps living in a highly cooperative and organized society where theyconsist almost entirely of females—the queen and her sterile femaleworkers.

• wasps     living in a highly cooperative and organized society where they consist almost     entirely of
• wasps     that live in a highly cooperative and organized society consisting almost     entirely of
• which     means they live in a highly cooperative and organized society, almost all
• which     means that their society is highly cooperative, organized, and it is     almost entirely
• living     in a society that is highly cooperative, organized, and it consists of     almost all
  

   Answer: B

d0805446

A. they用複數指a society錯誤
B. 正解
C. which means指代前面整句，gmat不認同此用法
D. 同c
E. 冗長不簡潔：consist句應如highly cooperative, organized一樣，想辦法成為society從句 ，原句另外開一個it句描述顯得囉嗦

wanjing830224

我刚上Manhattan GMAT搜了Ron的解释，仅供参考：
In A "they consist" is wrong. Wasps don't consist of... society does;

Choice b, 用一个同位语从句，定义'social wasps'；

In C & D, these instances of "which" are one of the reasons why those choices are wrong -- "which" should refer to the noun or noun phrase preceding the comma, but the nouns preceding the commas in those two choices don't make any sense in context.

For E, check the parallelism--"society that is highly cooperative, organized, and it consists . . ."