Regarding the evolution of human life history traits, what does the by-product hypothesis propose?
A) Prolonged juvenility is the result of selection for larger body size.
B) Our extended juvenile period and large brain co-evolved with the exploitation of nutrient-dense resources using complex extraction techniques.
C) Our extended juvenile period and large brain co-evolved with reciprocity.
D) Encephalization and prolonged childhood were driven by the demands of predicting and manipulating the environment.