Final answer:
Medicare Part A would provide the best insurance for excess hospital expenses for a retiree on Medicare who required five hospital stays in one year.
Step-by-step explanation:
Medicare Part A would provide the best insurance for excess hospital expenses for a retiree on Medicare who required five hospital stays in one year. Medicare Part A covers hospital charges and is funded by payroll deductions and contributions from a patient's employer. Although there are deductible charges and copayments, there are no limits on the total costs people can incur. Medicare Part B covers health-care costs outside of hospital stays, while Medigap (Supplemental Insurance) helps fill the gaps in coverage for Medicare beneficiaries. Medicare Part D is prescription drug coverage.