单选题 The philosopher claimed that a person who must consciously overcome his or her own indifference before helping another is behaving more nobly than one whose basic disposition allows such an act to be performed without______.
【正确答案】 D
【答案解析】解析：deliberation“思考，考虑”；enthusiasm“热情，热心”；comment“批评”；duplicity“表里不一”。根据句意，本题答案为D。