In the View of Pat Shipman, Bipedalism Is Advantageous Because

In the view of Pat Shipman, bipedalism is advantageous because it:

A) provides a broader view of the savanna and its resources-and its dangers
B) frees the hands for tool making
C) allows males to carry food to provision females with children
D) allows scavenging hominins to search for food more efficiently across the savanna