People who are interviewed haphazardly on a street corner do not constitute a representative sample of American adults because:

A) it is too diverse of a sample
B) the sample is too concentrated
C) the sample will overlook children
D) the Hawthorne effect will ruin the sample
E) the sample does not include people who live outside of the area and do not frequent the street corner

A sample taken from a street corner is likely to be biased and not highly representative of American adults as it excludes many people who do not frequent that particular street corner. This may have an impact on the diversity of the sample as well. Additionally, the sample may not include people who live outside of the area, which could also alter the results. Therefore, option E would be the best choice. The other options are less relevant to the problem.