A study undertaken in Sweden found that, when people worked for...

A study undertaken in Sweden found that, when people worked for six hours a day, they tended to be more productive and take fewer sick days than when they worked for the more traditional seven to eight hours per day. Therefore, for companies seeking to maximize profits, it would make sense to have more workers, each of them working for six hours rather than for seven to eight hours per day.

Which of the following must be true in order for the above conclusion to be correct?

A) People who work for six hours per day generally have more energy for managing various aspects of their lives than is had by people who work for more hours per day.

B) Financial gains achieved by having people work more productively for fewer hours per day would exceed the costs of hiring additional people to make up for the reduction in hours worked by each person.

C) People who go from working eight hours a day to working six hours per day generally report that they experience reductions in stress and increases in job satisfaction.

D) It is always the case that a reduction in the number of hours per day a person works results in an increase in that person's productivity.

E) Most workers would prefer working for only six hours per day over working seven to eight hours per day.

SOURCE: Target Test Prep