These are stage directions (A). As you probably know, The Importance of being Earnest is a play. This scene is not one that would be read out to the audience, it is what the audience would see on stage, ie stage directions. Since you are reading the play's script and cannot see the action on stage, stage directions have been provided for you in your text.
"no woman's heart / So big, to hold so much; they lack retention"
This shows that Orsino doesn't think that women are able to stay constant in love like men (especially himself) can. He says they "lack retention" which means they do not retain the same feelings for a long time like men do.
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 the correct answer is that has an undetermined answer.If a subject has been thoroughly covered, then there is no need for this researcher to do it all over again. If it's impossible to answer, there is no need to try. If it can be answered easily, then it doesn't really require a research. This leaves us with the last option, because a researcher might want to try and determine the answer.
