Answer:
The correct answer is:
d. relies on a sample that is too small to represent the entire corporate workforce
Step-by-step explanation:
In order to achieve such a general conclusion for this study, it would be necessary to develop the research in several corporations with a huge sample in each study, so the conclusion would be based in real facts. In this special case, the sample is really small and it has only been taken from one company, therefore, it cannot be generalized to all the corporations and all the workers.