why did archaeologists believe that native Americans living in the Mississippi and Peoria believe in some sort of afterlife

Are these your answer choices?

A.Tribal centers had churches and other symbols of worship.

B.Legends of an afterlife were passed down from generation to generation.

C.Pictographs and cave drawings depicting a spiritual life have been discovered

D.Burial mounds from the period contained such items as food,tools, and weapons.

What is your answer?