Surveys in Domorica indicate that only 10 percent of Domoricans in their
twenties read a newspaper regularly, while more than half of all Domoricans
over thirty read a newspaper regularly. Although Domoricans in their twenties
constitute a large proportion of the population, newspaper publishers
nonetheless predict that ten years from now, the percentage of Domoricans who
regularly read a newspaper will probably be no lower than it is today.
Which of the following, if true, provides the strongest grounds for the
newspaper publishers' prediction?
A.The number of Domoricans in their twenties is less than the number of
Domoricans over thirty.
B.The number of newspapers in Domorica has been gradually increasing over
the past several decades.
C.The proportion of Domoricans in their twenties who regularly read a
newspaper has always been low.
D.The surveys defined a regular reader of a newspaper as someone who reads a
newspaper more than twice a week.
E.The proportion of Domoricans who regularly read a newspaper was higher 20
years ago than it is today.
这题OA是C，但想不通为什么"D国二十代阅报比例一直以来都很低"可以支持Support十年
后D国阅报的人口不会比现在还低的论点？
再板友麻烦帮忙解答，谢谢

首先文内已经前提过了30岁的人是阅读报纸的最大群众20岁的是少众阅读报纸但是人数最多，过了10年20岁变30岁就会变阅读的大众，自然而然报纸就会上升答案要有一个设定就是这些20岁的人不会改变习惯，如果改变，那10年后的结果很不一定试着去想这是一个SOP 20岁人数多但读的人数最少30岁读的人数最多，所以我们要保持这个连结不能有额外可能性补充:这是一个小转大的概念 要保证10年后不会比现在少读报纸，假设如果20岁的人有增加阅读数量，那十年后阅读报纸的总量不一定会增加，因为那些增加量已经被统计过在过去的总量里头，所以十年后实际成长的幅度就不会提高，因此就可能不一定比现在高希望有帮助到你，我也还在学习，若有错误请指教

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