By that reference to Claudius, Hamlet means that he and Claudius are relatives but not similar to each other. The correct answer is B.
Romeo and Juliet should have followed Lawrence's plan because it would prevent any more trouble and they would stop having to sneak around everywhere to see each other.
I would say the answer is "harbor". This word is usually used as a noun; but in this case, it is a verb that means to provide shelter to someone or something, to keep someone safe, but also to have something in mind and think about it. This word is purposefully chosen and fits into Whitman's well-intended, philanthropic and inclusive worldview.