conclusion: Obviously, any workers who participate in a Quality Circles program will, as a result, become less satisfied with their jobs.
C) While participating in Quality Circles at Lark Manufacturing, 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.
C is wrong b/c it weakens the argument. look at the boldfaced words, they are the opposite of the original argument. E is correct b/c it doesn't say anything to weaken the argument. It only says what they workers felt at the beginning, but not at the end of the prgram. So, how do the workers feel about the program when it is over, we don't know. Hence, E doesn't weaken the argument.
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