Which of these traits is most strongly associated with the adoption of bipedalism?
A) enhanced depth perception
B) shortened hind limbs
C) opposable big toe
D) repositioning of foramen magnum

Question

Quizplus · Accepted Answer

The repositioning of the foramen magnum, the hole in the skull through which the spinal cord passes, from its ancestral position near the back of the skull to a position near the center of the skull base is the most strongly associated trait with the adoption of bipedalism. This change in position allowed for a more balanced upright stance and an unobstructed view of the surrounding environment. The other options listed are not as strongly associated with bipedalism.

Which of These Traits Is Most Strongly Associated with the Adoption