Answer:
a. has been of little value for understanding human variation.
c. reinforced traditional views of races as fixed biological entities that do not change.
d. allowed scientists to divide the human species into well-defined races.
Option A, C, and D are not true. The application of evolutionary principles to the study of human variation has been very valuable in understanding human variation and how it has occurred over time. It has also helped to challenge traditional views of race as fixed biological entities and has shown that race is a social construct rather than a biological one.
Step-by-step explanation: