Are these Romeo's lines you are referring to?
<span>Which thou wilt propagate to have it press'd
With more of thine: this love that thou hast shown
Doth add more grief to too much of mine own.
</span>
If so, I believe the correct answer is the first one - <span>Your love and concern are making me feel even worse. </span>He says in the excerpt that her love adds more grief to that which he already has a lot of, which makes the first sentence the only possible option here.
I would say It makes it seem professional or serious.
I would say the correct answer is the final option - Those who pursue revenge are often destroyed by it.
Hamlet was driven by his lunatic desire to have his revenge on Claudius for killing his father, which is why he wouldn't stop to think about anything else. Laertes likewise wanted to get his revenge on Hamlet for causing his sister's death. As you can see, they did get their revenge, but at what cost? Both of them died, as well as Claudius, Gertrude, and many other characters.
He shows someone who took control of his own destiny after a tragedy.
