1. The Aztec were polytheistic
2. The Aztec built pyramids to honour their gods
3. The Aztec believed in an afterlife
I think that it if Hinduism. Christianity is more known to worship in churches. Hindus typically have several temples for each of their gods/ goddesses. Muslims (Islam) worship in mosques and Jews worship in synagogues, so it is more than likely Hinduism.
A. the amount of time they spent building the wall
I think the answer is A, when I looked at the picture and did some research, I found that the wall is 70 miles long so it's pretty obvious that they spent a lot of time making it in ancient old times.
The answer is C. They heard the inca alot of gold. If this is wrong it could be B.
C should be the answer you are looking for