A credible source is one that is updated within the current year, states facts, NOT opinions, and is ending in .gov, .edu, etc.
D is most definitly the right answer bro bro
The theme of this is the idea that all the actions which you do to try to determine the aesthetic of a poem is vain if you in any way feel the need to manipulate it or even try to interpret it -- it is its own being. It is a complex, incalculable demonstration of beauty.