The broad-spectrum revolution is defined as the period when
A. H. sapiens populations overtook Neandertal caves and began to draw animal figures.
B. glacial retreats led to the exploitation of a greater variety of plant and animal foods.
C. primates developed the ability to see more than just primary colors and therefore could distinguish different types of leaves.
D. the greatest diversity of hominins lived in Africa.
E. H. sapiens shifted from gradual evolution to punctuated equilibrium.
Answer: B
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