The answer is A: enthusiastic and hopeful.
The poem "To a Sky-Lark," by William Wordsworth, in this passage, has an enthusiastic and hopeful tone. The repetition or sequence of words and expressions full of positiviness as well as moving to a superior level "up with me"; "into the clouds"; "Thy song, Lark, is strong" "Singing, singing" conveys enthusiasm. Hope is found in the "Lift me, guide me till I find...that spot...with clouds and sky."
