Final answer:
4) All of the above
Tricare is a comprehensive health insurance program for active-duty military members, their families, surviving spouses of service members, and retired military personnel.
Step-by-step explanation:
Tricare is health insurance designed for: 1) Active-duty military and their families, 2) Surviving spouses of military service members, 3) Retired service members, and hence the correct answer to your question is 4) All of the above.
Tricare is part of the United States Department of Defense Military Health System, and it provides comprehensive coverage to the eligible military community.
This is one of the various government-funded health-care programs, which include others, such as Medicare for those over 65 years old, Medicaid for people with very low incomes, and specific programs like the Veterans Health Administration aimed at military veterans and the Children's Health Insurance Program (CHIP) for children in families with relatively low incomes.