PLEASE HELP ME!! In a thoughtful well worded paragraph describe how the poem makes reference to the theme of impermanence

Can someone me answer this english question

What is the meaning of "full tide" as it is used in this sentence? before i could explain to her the differences of language in this world, she was embarked on the full tide of another subject. a long and involved argument an inaccurate representation a detailed and lively discussion an uncontrollable flood

Let freedom ring from the snow capped rockies of colorado what is the rhetorical device? a. imagery b. simile c. anaphor d oxymoron