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.
The first choice has the most reasonable and backed up claim.
Answer: It has been quite a <u>while </u>since I have visited the city I grew up in.
