Answer:
C. health maintenance organizations
Step-by-step explanation:
Healthcare intermediaries organizations that form links between small-scale providers to interact with governments, patients and vendors. These organizations can perform key health systems functions which are typically more challenging for individual private providers to do on their own. An individual pays the health maintenance organisation in advance for medical care that he may require in the future and the organisation provides medical care to the individual when the need arises. These organisations are able to provide this care by paying doctors affiliated to them, and other healthcare providers who deliver care to the patients