Which of the following statements is true regarding Medicare Part D?

Medicare Part D is specifically designed to provide prescription drug coverage for Medicare beneficiaries. This program helps cover the cost of medications and is aimed at reducing the financial burden of prescription drugs on seniors and individuals with disabilities. Part D plans are offered by private insurance companies that are approved by Medicare, and beneficiaries choose a plan that meets their prescription needs.

There are several key aspects of Part D that underscore its focus on medications, not on other types of medical services such as hospitalization or outpatient care. While it complements Medicare Parts A and B, which address hospital and outpatient services respectively, Medicare Part D is distinct in its purpose of facilitating access to affordable medications for enrollees.

This understanding helps clarify why the other options do not apply—Medicare Part D does not cover all medical expenses without limits, it is not limited to preventive services, and it does not include hospitalization and outpatient services, which are covered under different parts of Medicare.