Answer:
Robert Frost- end rhyme
Percy Bysshe Shelley- internal rhyme
Samuel Taylor Coleridge- alliteration
Explanation:
Frost's poem has rhyming lines, and every other line rhymes at the end.
Snow and below are rhymes in Shelley's poem. Because one is in the middle and one is on the end, that's internal rhyme.
Alliteration is the repetition of a letter or sound. (furrow followed free)
Hope this helps!