Question

The succesful completion of large builing projects bt the olmec was in large part because of

a the enormous wealth that come from the gold mines od the olmec homeland
b the large population that lived in olmec citties
c the ability of the olmec elite to require and direct labor from its inhabitants
d the decentralized nature of thier political system
e a reliance on a massive supply, of slave labor

i think the answer is C