He took her hand and felt the scar on her thumb, ______of an accident with a kitchen knife in the early days of their marriage.
【正确答案】 D
【答案解析】mode：模式，方法，常用短语为mode of life，意为“生活方式”；premise：前提；signature：签名；legacy：遗产，遗留的问题，后遗症。根据句意可知，选D。