Which of the following literary elements involves repetition?

A: oxymoron

B: onomatopoeia

C: analogy

D: refain

Not an oxymoron, because that is when you juxtapose 2 opposites. "Stupid genius"

Not onomatopoeia, because that is using the sound something makes to describe it. "buzz of a bee"

Not analogy, because that us a comparison between two things to explain. "an orange is like a mango, just different"

A refrain is the repetition of certain lines, like a chorus.