Classifying people on the basis of race alone is difficult and probably inconclusive in terms of intelligence based on the fact that
A) people of different races interbreed.
B) skin pigmentation is uncorrelated with many psychological and physical traits.
C) so many environmental factors affect people's physical and intellectual abilities.
D) all of the above
E) none of the above

Question

Quizplus · Accepted Answer

Classifying people based on race alone for intelligence is problematic because of the interbreeding among different races, the lack of correlation between skin pigmentation and many psychological/physical traits, and the significant impact of environmental factors on physical and intellectual abilities.

Classifying People on the Basis of Race Alone Is Difficult