Which statement is true regarding healthcare access in the United States?

The statement that the U.S. is unique in linking healthcare to employment is true because it highlights a distinctive aspect of the American healthcare system compared to many other developed nations. In the United States, a significant portion of health insurance coverage is obtained through employer-sponsored plans. This employment-based model means that access to healthcare is often tied to one's job, leading to gaps in coverage for those who are unemployed, underemployed, or work part-time.

This employment linkage can result in disparities in healthcare access, as not all jobs provide health insurance benefits. Other countries have adopted systems that ensure healthcare access independent of employment, such as universal healthcare models funded by taxes. This contrast underscores how the U.S. system is somewhat exceptional and creates challenges for many individuals, especially those in precarious job situations or who are self-employed.

The other options do not accurately represent the complexities of healthcare access in the United States. Equal access is not a reality due to various socioeconomic factors, healthcare is not strictly limited to full-time employees or low-income families, and the healthcare system encompasses various coverage mechanisms beyond just employment ties. Thus, the correct statement reflects the unique relationship between employment and access to healthcare in the United States.