In "The Most Dangerous Game," Rainsford's survival depends on his adventurous bold nature because he is resourceful and refuses to play by Zaroff's rules.
He really hates Zaroff and thinks there are other ways to survive, which is why he doesn't follow his lead but rather relies on his own skills. This also helps him survive in the long run, trusting his own instincts, rather than someone else's, which is why B is the correct answer.