47. High school
students who feel that they are not succeeding in school often drop out before graduating and go to work. Last year, however, the city’s high school dropout rate was significantly lower than the previous year’s rate. This is encouraging evidence that the program instituted two years ago to improve the morale of high school students has begun to take effect to reduce dropouts.
Which one of the following, if true about the last year, most seriously weakens the argument?

(A) There was a recession that caused a high level or unemployment in the city.

(B) The morale of students who dropped out of high school had been low even before they reached high school.

(C) As in the preceding year, more high school students remained in school than dropped out.

(D) High schools in the city established placement offices to assist their graduates in obtaining employment.

(E) The antidropout program was primarily aimed at improving students’ morale in those high schools with the highest dropout rates.

答案是A，可我觉得D也对啊，学校设立了类似就业指导办公室帮助毕业生找到工作，这样不是有些本来要辍学的就不辍了会好好等到毕了业给安排工作么？

我的逻辑哪里有问题？谢谢！！！

这道题要分清楚因果。
背景条件：原因A：学生觉得学习不能成功  结果B：学生辍学直接去工作
结论推理是这样：原因C：因为辍学的人少了    结果D：去年的措施有效了
那么削弱题一般就是对原因C削弱咯。不成立或者他因。你看前提，人们辍学干什么去了？去工作了嘛！现在告诉你，他们出去没工作了，踏踏实实就跟学校呆着了呗。
你说的D这个思维太具有跳跃性了。你假设所有的学生上学终极目标都是为了找工作哦~ 而题目里面没告你这些信息哦！他可能就是觉得上学没出路，耽误时间，所以才出去工作，你看这样理解，你的D还正确么？