Congressman Riley did not retire from office willingly. He was forced to ________ by his involvement in political scandal. He only stepped down after a lot of pressure from the party.
句意：众议院议员赖利辞职并非出于自愿，而是受政治丑闻的牵连而被迫辞职的。他是在党内给他 施加众多压力后辞任的。abdicate放弃；辞职。avert避免，防止。abject卑鄙的；可怜的。absolve免除；赦免。因此，本题的正确答案为B。