Answer:
The truth about a Case Study:
E. The results can be generalized to an entire population.
Explanation:
A case study studies one person, group, situation, or event in-depth in order to illustrate a thesis or principle which can be applied to an entire population.
Case study researches and results have played prominent roles in business and management, psychology, anthropology, sociology, and political science, education, clinical science, social work, and administrative science. For example, a doctor or another scientist can use a patient treated as a case study to study a disease, the treatment, and the outcome. Such a study will help in treating other patients.