单选题 The "lowest common denominator" refers to ______.

A、 the poorer classes
B、 themes and attitudes that would be accepted by the greatest number of people
C、 attitudes accepted by the American intellectuals
D、 the character of the authors of the dime novel

【正确答案】 B

【答案解析】在第一段第四句后半句对lowest common denominator作了解释：themes that were found to be popular and attitudes that met with the most general approval became stereotyped，所以答案为选项B。