Investigate major international financial organizations.

The International Monetary Fund is the core institution of the international monetary system. Its main purposes are: to promote cooperation in the international monetary field; Promote the expansion and balanced development of international trade; Promote exchange rate stability and maintain orderly exchange rate arrangements among member States. Option a is correct.

The World Bank is the largest multilateral development institution in the world. Its statutory purposes are: to promote productive investment and assist member countries in economic revival and development of production and resources; Promoting private foreign loans and investments; Encourage international investment, develop the production resources of member countries, promote the long-term balanced development of international trade and maintain the balance of payments. The BD option is correct.

The purpose of the Bank for International Settlements is to promote cooperation among central banks of various countries, provide additional convenience for international financial activities, and act as a trustee or agent in international settlement. C option is correct.

The purposes of major international financial organizations have different influences on the development of different countries, and the E option is wrong.