Final answer:
African Americans have the highest asthma prevalence of any racial/ethnic group in the USA.
Step-by-step explanation:
The racial/ethnic group with the highest asthma prevalence in the USA is African Americans. According to research, African Americans suffer greater from chronic diseases, including asthma, than White Americans. Health disparities exist between racial and ethnic groups, and African Americans have higher rates of emergency room visits and unmet healthcare needs compared to any other group.