单选题 Chatwin has devoted his life to a kind of Grail quest, hoping to prove—by study and direct experience with primitive people—that human nature is gentle and defensive rather than ______ , and that man is ______, not a predator.

• (A) belligerent...an apostate
• (B) martial...a crusader
• (C) aggressive...a pilgrim
• (D) truculent...a gladiator
• (E) pugnacious...a pawn