Final answer:
The PPO type of TRICARE option in which the individual does not have to enroll or pay an annual fee is TRICARE 2) Standard.
Step-by-step explanation:
TRICARE Standard is a fee-for-service health plan that gives beneficiaries the freedom to choose any civilian doctor or specialist without the need for referrals. Although participants are responsible for meeting an annual deductible and cost sharing through copayments and cost shares, there is no specific enrollment fee for TRICARE Standard.
On the other hand, TRICARE Prime, TRICARE Extra, and TRICARE Select all require enrollment, and in the case of TRICARE Prime and TRICARE Select, an annual fee is also applicable. Therefore the correct answer among the given option is 2) Standard.