It's not a. obviously because he doesn't know that she and her father fought over her not wanting to marry him. It's not b. because he acts like she is already his wife and I quote says "Till then, adieu, and keep this holy kiss." It isn't c. because the whole reason her father insisted he marry her so quickly was because of her deep grieving over "Tybalt", which concludes that the answer is d. (Sorry just wanted to be thorough so you wouldn't be confused.)
Authors might have something else in mind for what they are writing about.
C.) Rich
While Daisy is a wife she is only married for the money and not really to be a wife, and that's pretty much the entire reason, is the money.
'their' because the sentences says one of the speakers. it doesn't clarify if the speaker is a boy or girl.