GWD-18-Q22

verasong

22. GWD-18-Q22
In each of the past five years, Barraland’s prison population has increased.  Yet, according to official government statistics, for none of those years has there been either an increase in the number of criminal cases brought to trial, or an increase in the rate at which convictions have been obtained.  Clearly, therefore, the percentage of people convicted of crimes who are being given prison sentences is on the increase.

Which of the following, if true, most seriously weakens the argument?

不好意思，可我真看不懂这句话的意思，哪位大N 给解释一下，谢谢了

darlingchum

B这个地方坐牢的人在进五年里变多了。然而，官方的数据表明，这些年来审讯的犯罪事件量也没有增长，被定罪的比率也没有增加，所以，是因为定刑为坐牢的比例增加了。
比如这五年内，全市发生100件犯罪，100件里被定罪的有90件
但是坐牢的人从10变成了30个
就有可能是被定罪的人中，罚他们坐牢的比例增高了