Final answer:
African Americans have the highest incidence of lung and bronchus cancer.
Step-by-step explanation:
The ethnic group with the highest incidence of lung and bronchus cancer is African Americans.
A report from the Henry J. Kaiser Foundation states that African Americans have higher rates of several diseases, including lung cancer. Ethnic minorities such as Mexican Americans and Native Americans also have higher rates of these diseases compared to White people.
Smoking is the major cause of lung cancer, accounting for about 85% of cases. Smoking-related risk of lung cancer is higher among African Americans compared to other ethnic groups.