Which of the following best defines Medicare Part D?

Medicare Part D is primarily known for offering prescription drug coverage, which is provided through private insurance companies that have been approved by the federal government. This program was established to help Medicare beneficiaries afford the costs of prescription medications, enabling access to necessary treatments and improving overall health outcomes.

By design, Medicare Part D is different from Medicare Part A, which covers hospital care, and Part B, which addresses outpatient services and medical care. As such, Medicare Part D specifically fills the gap concerning medication coverage, making it essential for eligible individuals looking for ways to mitigate their prescription drug expenses. This distinction makes option A the best and most accurate representation of what Medicare Part D encompasses.