单选题 In 2005, President Bush put his political capital where his mouth was, and lost. He went all-out to______Congress and the American people that privatizing Social Security would be good and necessary.

A、 argue
B、 concede
C、 convince
D、 confess

【正确答案】 C

【答案解析】解析：句子大意为：布什总统2005年许下空头政治支票，而今食言了。当时他竭力说服国会和美国民众相信将社保私有化是有益的和必需的。在给出的选项中：argue“辩论”；concede“让步”；convince“说服”；confess“坦白”。所以，正确答案是C。