请不吝赐教！

GWD 8-Q18:

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

问题1：原文结构和含义？

问题2：E项中，如果去掉’it’是不是就对了？

E：living in a society that is highly cooperative, organized, and consists of almost all