Critical Reasoning

Hi,

Request your help with the following question.I came down to choices B & C.Need help on the logic behind distinguishing between the 2 options.

The more frequently employees take time to exercise during working hours each week,the fewer sick days they take.Even employees who exercise only once a week during working hours take less sick time than those who do not exercise.Therefore, if companies started fitness programs,the absentee rate in those companies would decrease significantly.

Which of the following, if true, most seriously weakens the argument above?

A. Employees who exercise during working hours occasionally fall asleep for short periods of time after they exercise.
B. Employees who are frequently absent are the least likely to cooperate with or join a coooperate fitness program.
C. Employees who exercise only once a week in their company's fitness program usually also exercise after work.
D. Employees who exercise in their company's fitness program use their working time no more productively than those who do not exercise.
E. Employees who exercise during working hour take slightly longer lunch breaks than employees who do not exercise.

OA - B

Answer C does not weaken the argument. It is stated that workers who exercise once a week during working hours usually also exercise after work. We know from the premises that even if a person exercises once a week, it makes this person more healthy and contributes to the lower rate of absences. Therefore, if the company starts a fitness program, the rate of absences will decrease. However, if workers who are absent the most often will not cooperate, the fitness program will have no influence over their absence rate.

C actually strengthens the argument. If employee is doing additional exercise after office hours, chances of his being sick will reduce.