【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