单选题 It denies to the past an integrity and will of its own, ______people acted out of a variety of motives and______events had a multiplicity of causes and effects.
【正确答案】 B
【答案解析】解析:句意是,它否定了自己过去的诚实和意愿,因为在过去人们表现出各种动机,并且事件有多种原因和结果。which可引导非限定性定语从句,并且只有which可加in。所以正确答案是B选项。