What was the most common form of sacrifice in Aztec society?

food offerings

the sacrifice of war captives

the sacrifice of slaves

voluntary bloodletting

The best answer is the sacrifice of war captives. Sacrificial victims were most often selected from captive warriors. Indeed warfare was often conducted for the sole purpose of furnishing candidates for sacrifice.

This was the so called flowery war where indecisive engagements were the result of the Aztecs being satisfied with taking only sufficient captives for sacrifice for sacrifice and where the eastern Tlaxcala state was a favorite hunting ground.

Those who had fought the best or were the most handsome were considered the best candidates.