—Who listens , Eric , Brad or Rick?
—Of course Brad.
A. the most carefully
B. more carefully
C. the most careful
D. more careful
网友回答
(答案→)A. the most carefully
B. more carefully
C. the most careful
D. more careful
解析：本句中listen是行为动词“听”的意思，后面接副词做状语，联系下文Eric , Brad or Rick可知是表示在多个中进行比较，故用副词的最高级。故选A。