单选题 The Minister admitted unwillingly that his Department had been "remiss".
【正确答案】 C
【答案解析】assented:同意;acceded:依从,允诺;conceded:勉强承认,让与; concurred:并发,同意,一致。题中admitted unwillingly意为“不情愿地承认”,可知 C选项最符合要求。