samyak wrote:2. Many companies now have employee assistance programs that enable employees, free of charge, to improve their physical fitness, reduce stress, and learn ways to stop smoking. These programs increase worker productivity, reduce absenteeism, and lessen insurance costs for employee health care. Therefore, these programs benefit the company as well as the employee.

Which of the following, if true, most significantly strengthens the conclusion above?

(A) Physical fitness programs are often the most popular services offered to employees. -- Incorrect - this is just a statement which doesn't has any effect on the conclusion. Ok these programs are often the most popular services offered to employees, but how employees are using these services? no information. After using the service how many employees are getting benefited? No Information.
(B) Studies have shown that training in stress management is not effective for many people. - Incorrect - This actually weakens the argument. If the training is not effective then it is not beneficial for company.
(C) Regular exercise reduces people's risk of heart disease and provides them with increased energy. - Correct - If program increases the energy of the employees then it will be obviously beneficial for the company.
(D) Physical injuries sometimes result from entering a strenuous physical fitness program too quickly. - Incorrect - This actually weakens the argument. If injuries are resulting from entering a strenuous physical fitness program then it is not beneficial for company.
(E) Employee assistance programs require companies to hire people to supervise the various programs offered. - Incorrect - this also weakens the conclusion. If company has to hire more people then company's cost of operation will increase and program will not be beneficial

Why C is a better answer than A? Please comment.