Believe in yourself. Know your rights. Decide what you want, Get the facts. Planning strategy. Gather support. Target efforts. Express yourself clearly. Assert yourself clearly. Be firm and persistent. Here's a list of 10 examples.
The answer to you're question is D
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.