Which of the following is designed to insure a low-income person and family?

CHAMPVA (Civilian Health and Medical Program of the Department of Veterans Affairs) is designed to provide health care benefits to the dependents of veterans who are permanently and totally disabled due to a service-related condition, not specifically targeting low-income individuals or families.

Medicare is primarily designed for individuals aged 65 and older, as well as some younger individuals with disabilities. While it provides essential health insurance coverage, it does not specifically cater to low-income families, focusing instead on age and disability status.

Social Security is a federal program that provides financial assistance and income support to retirees, the disabled, and survivors of deceased workers. While it can aid low-income individuals, it is not specifically a health insurance program nor is it designed solely for low-income families.

Tricare is a health care program for military personnel, retirees, and their dependents. It does not focus on low-income families in general but rather serves those connected to military service, regardless of their income level.