GWD31 09-Q2 - 怎么看都不对劲~请NN们帮个忙

Q2:

As the honeybee’s stinger is heavily barbed, staying
where it is inserted, this results in the act of stinging causing the bee
to sustain a fatal injury.

1. As the
        honeybee’s stinger is heavily barbed, staying where it is inserted, this
        results in the act of stinging causing
2. As the
        heavily barbed stinger of the honeybee stays where it is inserted, with
        the result that the act of stinging causes
3. The
        honeybee’s stinger, heavily barbed and staying where it is inserted,
        results in the fact that the act of stinging causes
4. The
        heavily barbed stinger of the honeybee stays where it is inserted, and
        results in the act of stinging causing
5. The
        honeybee’s stinger is heavily barbed and stays where it is inserted, with
        the result that the act of stinging causes