A television manufacturing plant has a total of 1, 000 workers, though an average of 10 are absent on any given day for various reasons. On days when exactly 10 workers are absent, the plant produces televisions at its normal rate. Thus, it is reasonable to assume that the plant could fire 10 workers without any loss in production. The argument is most vulnerable to criticism on the grounds that it ['fails to show that the absentee rate would drop if 10 workers were fired', 'overlooks the possibility that certain workers are crucial to the production of televisions', 'takes for granted that the normal rate of production can be attained only when no more than the average number of workers are absent', 'takes for granted that the rate of production is not affected by the number of workers employed at the plant']