[求助]一道逻辑题

Lark Manufactoring Company initiated a voluntary Quality Circles program for machine operators. Independent surveys of employee attitudes indicated that the machine operators participating in the program were less satisfied with their work situations after two years of the program's existence than they were at the program's start. Obviously, any workers who participate in a Quality Circles program will, as a result, become less satisfied with their jobs.

Each of the following, if true, would weaken the conclusion drawn above EXCEPT:

(C) While participating in Quality Circles at Lark Manufactoring, machine operators exhibited two of the primary indicators of improved job satisfaction: increased productivity and decreased absenteeism.

(E) The machine operators who participated in Quality Circles reported that, when the program started, they felt that participation might improve their work situations.

其他三个选项都比较简单，一看就可以排除掉~

答案选E

为什么不选C呢？

谢谢啦~  

为什么要选C呢……

C感觉无关啊

c很明显的直接weaken啊。。

mm再想想。

呵呵，发现理解错了~了解~