Final answer:
A beneficiary cannot be enrolled in both TRICARE Standard and TRICARE Prime simultaneously. Choosing TRICARE Prime enrollment ceases coverage under TRICARE Standard.
Step-by-step explanation:
The question addresses whether a beneficiary can be enrolled in both TRICARE Standard and TRICARE Prime at the same time. The answer is false. Once a beneficiary chooses to enroll in TRICARE Prime, they are no longer covered by TRICARE Standard. TRICARE Prime is a managed care option similar to a health maintenance organization that provides comprehensive health coverage including primary care, specialty care, and prevention. TRICARE Standard, now known as TRICARE Select, is a fee-for-service option that gives beneficiaries the flexibility to see any authorized TRICARE provider.