He tried to----his daughter of the danger of spending more t

warn是警告的意思.用法：warn sb of sth
remember是想起的意思.remenber一般是针对自己的行为.
mind是介意,想法的意思.mind doing是介意做某事.
suggest是建议和暗示的意思.suggest to do sth or suggest doing sth
所以不管是从用法还是语境都应该选择warn