Explanation:

- World Bank: The Ease of Doing Business Index is indeed released by the World Bank. This index ranks countries based on their regulatory environment for businesses.

- World Economic Forum (WEF): This organization is known for its annual meetings in Davos and global reports like the Global Competitiveness Report, but not the Ease of Doing Business Index.

- International Monetary Fund (IMF): The IMF focuses on global economic stability and monetary cooperation, but it does not release this index.

- World Trade Organization (WTO): The WTO deals with international trade regulations and negotiations, not the Ease of Doing Business Index.

- United Nations Development Program (UNDP): UNDP focuses on human development indices but isn't involved with the Ease of Doing Business Index.