Answer:
O A.As a detached observer
A. Somewhat.
This is a modifier that doesn't really affect the sentence.
When he says "My will to her consent is but a part; An she agree, within her scope of choice Lies my consent and fair according voice." He is saying here that his consent to Juliet and Paris' marriage is "but a part" of the decision, so he believes that her choice is also needed. He says that, while his "consent and fair according voice" may play a part in her choice, she still has a choice, free will.
D. You want it to be eye catching to the audience, but you also want it to be relevant to the subject you're talking about. A long title may bore the audience.