(Uragirimono no Naka de Mottomo Kiken'naru Uragirimono wa Nanika to Ieba, Subete no Ningen ga Onore Jishin no Naibu ni Kaku Shite Iru Tokoro no Mono de Aru.)
"Every Man has in Himself the Most Dangerous Traitor of All"

With a little more time on the island, we see how each of the classes actually treat this test differently.