Answer:
D. PPO
Step-by-step explanation:
PPO is an acronym for the preferred provider organization. PPO is one of the insurance health plans and is most popular among the family and individual markets. Under the PPO plans, the insurance company provides the insured with a long list containing doctors and hospitals to seek care. The list is the provider's preferred network, where patients should go for services.
A member of a PPO plan is encouraged to use the insurer network of preferred doctors. Members do not require a primary care physician's referral to see any specialist in the preferred doctors' network.