Which of the following is not a primary source of funds to pay for custodial care in a nursing home?

Medicare is not a primary source of funds for custodial care in a nursing home. This is primarily because Medicare is designed to provide short-term coverage for medically necessary services and does not cover long-term custodial care, which includes assistance with daily activities like bathing, dressing, and feeding.

In contrast, Medicaid is specifically aimed at providing assistance for low-income individuals who require long-term care, including custodial care in nursing facilities. Personal savings are often a primary source of funds that individuals tap into to pay for their care until they exhaust those resources. Long-term care insurance is also designed to help cover the costs of custodial care, making it a relevant source of funding for those who have purchased such policies.

Thus, while options like Medicaid, personal savings, and long-term care insurance directly address the financial needs associated with ongoing custodial care, Medicare's limited focus on short-term, medically necessary services clearly distinguishes it from these funding sources.