Final answer:
Medicare Part D is a requirement for prescription drug coverage for Medicare beneficiaries. Having multiple chronic diseases is one of the eligibility criteria for Medicare Part D.
Step-by-step explanation:
Medicare Part D is a requirement for prescription drug coverage for Medicare beneficiaries. One of the requirements to be eligible for Medicare Part D is having multiple chronic diseases. This means that individuals who have been diagnosed with two or more chronic illnesses, such as diabetes, hypertension, or asthma, would meet this requirement.