21. According to Paragraph 1, one motive in imposing the new rule is to_____.

21.【答案】[A] enhance banker's sense of responsibility

【解析】根据题干关键词“paragraph 1”和“one motive in imposing the new rule”，可回文定位至第一段第三句“The main purpose of this ‘clawback’ rule is to hold bankers accountable for harmful risk-taking and to restore public trust in financial institutions”。由此句可知，制定这个规则的主要目的是让银行家为不良风险负责以及恢复公众对金融机构的信任。对比所给四个选项，只有A项 enhance banks’ sense of responsibility （增加银行的责任感）与原文表述一致，故为正确答案。