E strengthens the argument and C doesn't weaken.
Lark Manufacturing 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.
Premise 1: Lark Manufacturing Company initiated a voluntary Quality Circles program for machine operators.
Premise 2: Two yrs after the above program, An independent survey was performed on participants of the program and it was found that participants were less satisfied with their job as before the start of the program.
Conclusion: The program is the reason that people are less satisfied.
(A) The second survey occurred during a period of recession when rumors of cutbacks and
layoffs at Lark Manufacturing were plentiful .Incorrect.It weakens the argument.This option states a reason that some external factors rumors of cutbacks and
layoffs which were not present at the start of the program were reason of their less satisfaction
(B) The surveys also showed that those Lark machine operators who neither participated in
Quality Circles nor knew anyone who did so reported the same degree of lessened
satisfaction with their work situations as did the Lark machine operators who participated
in Quality Circles.Incorrect.It weakens the argument.This option states that other operators who were not a part of program also felt the same.This means there are some other reasons for lesser satisfaction
(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.This nowhere connects to the conclusion.
(D) Several workers at Lark Manufacturing who had participated in Quality Circles while
employed at other companies reported that, while participating in Quality Circles in their
previous companies, their work satisfaction had increased.Incorrect.It weakens the argument.This option states that some worker's satisfaction has increased which is against the conclusion
(E) The machine operators who participated in Quality Circles reported that, when the program
started, they felt that participation might improve their work situations.Correct.it strengthens the argument as operators had high expectation because of the program only.Hence, Less satisfaction as the program was not upto the mark.
Success has been and continues to be defined as Getting up one more time than you have been knocked down.