“why has man rooted himself thus firmly in the earth, but that he may rise in the same proportion into the heavens above? ” is an example of which rhetorical device?

How would “in a station or the metro” change of the bough was bright and lovely rather than wet and black a: the station would seem cheerier b: the poem would not be considered imagist c: the people would seem less pleasant. d: the poem would no longer be hokku