A Large Study of Heart Disease That Included White and African-American

Multiple Choice

A large study of heart disease that included White and African-American participants considered the age and gender of the participants but not their socioeconomic status. The conclusion drawn by the researchers was that being an African American male places you at greater risk for heart disease than being a White male. The problem with this conclusion is _____

A) no other races were included in the study.
B) we can't tell if the variable is race or socioeconomic status.
C) there were no African-American researchers on the team.
D) we already knew African-Americans get more heart disease.