To me, Hip-hop is poetry...
but at the same time its MUSIC!
50% of a song is the beat!
someone could be nasty as a muthafucka on the mic but most people aint gonna listen to dude if the beat he is ripping isn't thorough too.
You ever noticed why everyone's favorite MC is always backed by excellent production.
If rap was pure poetry it'll be more like spoken word relying on no instrumental or rhyme pattern.
The whole point of rap is being on rhythm and rhyming.
Poetry? Yes and no, but I'm not voting cause all those choices are dumb.