The correct answer is A. Exposure to crops from the Old World brought about great wealth for the indigenous people.
This statement is not accurate in the context of the negative effects of the Columbian Exchange on indigenous populations. While some crops from the Old World were introduced to the Americas, the overall impact of the Columbian Exchange, particularly through the introduction of diseases and exploitative practices, generally did not lead to great wealth for the indigenous people. Instead, many indigenous communities faced significant decline due to disease, oppression, and the economic structures imposed by European colonizers.