please help asap

Some managed care plans use physicians, hospitals, and health care organizations that agree to make medical services available to insureds at discounted fees. Insureds are not required to use these entities, but if they do, health care costs are less than if these entities are not used. Such health care entities are called O health savings accounts (HSAs). O preferred provider organizations (PPOs). Blue Cross/Blue Shield Plans. point-of-service (POS) O health maintenance organizations (HMOs). er Online nn