单选题 If you ______ the principle of democratic government to your family you will run into some obvious difficulties.
【正确答案】 D
【答案解析】[解析] 各选项的意思是：carry运送，携带，支撑，支持；track跟踪，追踪；manipulate(暗中)控制，操纵，影响；adapt使适应，使适合(+to)。根据句意可知，答案是D。