急切求助GWD3－4的解释。

GWD3-Q4:

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

1. wasps living in a highly cooperative and organized society where they consist almost entirely of
2. wasps that live in a highly cooperative and organized society consisting almost entirely of
3. which means they live in a highly cooperative and organized society, almost all
4. which means that their society is highly cooperative, organized, and it is almost entirely
5. living in a society that is highly cooperative, organized, and it consists of almost all

请问这道题目的答案为什么是B啊，百思不的其解。

句子中的number如果是被列入的意思的话，应该用被动的啊。而且