Answer: The public healthcare system that offers insurance primarily to people over sixty-five years old is Medicare.
Explanation: Medicare is a public healthcare system created by President Lyndon Johnson in 1965. This program offers insurance mainly to older people, more specifically to people over sixty-five years. Some of the benefits that Medicare provides are medical and hospital insurance and a prescription drug plan that includes discounts. In order for a person to be eligible for Medicare, he/she needs to be a U.S. citizen or a permanent resident.