Interest in determining "racial purity" was not, and is not, a problem found exclusively in any society. As we have seen, numerous methods were devised in an attempt to ensure that one's racial makeup was exact and clear. The "one-drop" rule was one method, arising out of miscegenation laws forbidding interracial marriage. The fundamental flaw with the "one-drop" rule is that
a. the one-drop rule depended on a nonexistent ability or test to detect, biologically, the presence of racial impurities.
b. the one-drop rule required blood testing verification of race on birth certificates, which were later used to reinforce antimiscegenation laws.
c. enforcement of the one-drop rule meant that, if found out, the individuals would need to get a divorce.
d. the one-drop rule was not as accurate a determination as other tests