What was the primary reason for the importance of sacrifice to the Aztecs?
a.) It served a primary role in agriculture, as Aztecs believed that offering blood would insure a good harvest
b.) Aztec leaders used it primarily as a way to rid their civilization of criminals
c.) Aztecs wanted to show others in Mesoamerica their power; human sacrifice combined with cannibalism demonstrated this
d.) The sun, the source of life, needed food--human blood--in order to continue moving