1. their
2. their
3.their
4.its
5.its
It would look like Modern would be the participle.
Because Modern modifies what the Essay is, Essay is the word modified.
I'm pretty sure this is right, since no other word in the sentence seems to modify anything.
Answer:
because she is an outsider, Alice does not understand the strange rules of the looking glass land.
I think the answer could be c or d. D makes a little more sense though. I hope this helps a little bit.