Answer:
Health maintenance organization.
Step-by-step explanation:
The health maintenance organization is a medical insurance group that has been started in U.S.A. This organization provides the manage care for the health insurance and medical services.
This medical organization was started in 1973 with few number of the employees. The different medical organizations and doctors that follow the rules of this organization were also included. This organization also covers the emergency medical services.
Thus, the correct answer is health maintenance organization.