C. a refrain, because it's a point of emphasis
<span>The poem uses free-verse structure.
A free verse poem is one that does not follow a specific or repetitive structure. This poem does not have a meter, rhythm, or rhyme scheme, the lines differ in length and number of syllables, it doesn't rhyme consistently, and the meter changes throughout so it is free verse.</span>
<em>Because, </em><em>Urashima </em><em>jumped of the bridge
</em>