Which artist chose graffiti for creative expression?

Answer 1

http://www.google.com/search?q=artist+chose+graffiti+for+creative+expression&ie=utf-8&oe=utf-8&aq=t&client=firefox-a&rlz=1R1GGLL_en___US379

Obviously, everyone and his uncle has asked this identical question. The answer is an opinion, and it's probably in your text/course materials.