Final answer:
TRICARE Retail Pharmacy charges Prime enrollees (except for active duty members) a 50 percent point-of-service cost-share.
Step-by-step explanation:
The TRICARE pharmacy program option that charges Prime enrollees (except for active duty members) a 50 percent point-of-service cost-share is TRICARE Retail Pharmacy.
TRICARE Pharmacy Home Delivery, TRICARE Mail Order Pharmacy, and TRICARE Specialty Pharmacy do not charge a 50 percent point-of-service cost-share.