When actual blood-group testing was conducted, there was no significant correlation found between ethnic ancestry and IQ scores because
A)blood type is not genetically determined.
B)culture-fair tests were not utilized.
C)obvious external markers, like skin color, have little to do with underlying genetic differences.
D)of all of these.

Question

Quizplus · Accepted Answer

Blood type and skin color are not directly related to cognitive abilities or IQ scores, and external markers like skin color do not reflect the complex genetic factors that influence intelligence.

When Actual Blood-Group Testing Was Conducted, There Was No Significant