Which of the following best defines Medicare Part D?

Medicare Part D is specifically designed to provide prescription drug coverage to Medicare beneficiaries. This program allows eligible individuals to receive assistance with the costs of medications, helping to ensure that they have access to necessary prescriptions without significant financial burden. Part D is an integral part of the Medicare system, aimed at improving medication adherence and health outcomes by making it more affordable for covered individuals to fill their prescriptions.

In contrast, the other options refer to separate aspects of Medicare: hospital coverage is typically provided under Medicare Part A, preventive services are part of Medicare Part B, and home health services can fall under both Part A and other home health programs, but none relate specifically to prescription drugs like Medicare Part D does. Thus, option B accurately captures the essence and primary function of Medicare Part D.