GRE General Test: RC-644451 GRE Reading Comprehension | TOEFL IELTS GMAT GRE SAT ACT PTE ESL

Employees of companies that offer corporate fitness programs consistently take fewer sick-days than do employees of companies that do not offer fitness programs. Thus, corporate fitness programs are shown to have a positive effect on the health of a company's workforce.

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

A Other benefits offered by companies that do not offer corporate fitness programs surpass the benefits offered by companies that do offer such programs.

B Companies that offer corporate fitness programs attract employees who are more health conscious than the employees of companies that do not offer such programs.

C The health benefits of a corporate fitness program depend upon the particular makeup of the program.

D Employees who participate in corporate fitness programs are not measurably less healthy than people who exercise on their own.

E People who participate in fitness programs not offered by their employees are generally healthier than people who participate in corporate fitness programs.