One of the main factors that allowed Native Americans in Mexico to settle cities larger than those in areas to the north was that Central America contained far more gold and riches that acted as currency and boosted the economy. Practically no gold was found in what is now the eastern United States.
The answer would be C, as through process of elimination we can determine that both A and B are untrue for this verse, and D would make no sense because Heaven should not be buried it should be shared.
