Which of the following is NOT one of the 4 regional market zones?

The correct choice, which is not one of the four regional market zones, is the International Monetary Fund (IMF). The primary purpose of the IMF is to ensure global monetary cooperation, secure financial stability, facilitate international trade, promote high employment and sustainable economic growth, and reduce poverty around the world. While the IMF plays a significant role in the global economy, it does not function as a regional market zone like the other options mentioned.

MERCOSUR, ASEAN, and the EU are all examples of regional market zones that facilitate economic integration among member countries. MERCOSUR aims to promote free trade and the fluid movement of goods, people, and currency among its member states in South America. ASEAN is a political and economic organization of Southeast Asian nations that promotes regional stability and economic growth. The European Union (EU) is a political and economic union of European countries that allows for free movement of goods, services, people, and capital among its member states.

Therefore, while the IMF plays a critical global economic role, it does not belong to the category of regional market zones, which is why it is the correct answer to the question.