Answer:
One of the main concerns with the case study method of resarch is that its results can rarely be taken as representative or generalizable to other populations.
Step-by-step explanation:
The case study method is an in depth research that takes into account only one case and analyzes the relationship between different variables in that case, it can be a person, a group of people or an institution. Nonetheless, since it only analyzes that single case, it is often said that the results are not representative to other cases.