Which institution mainly offers long-term financing to developing nations to support the construction of infrastructure like schools, hospitals, and roads?

Explanation

The World Bank is the primary organization that provides developing countries with long-term loans aimed at building essential infrastructure such as schools, hospitals, and roads. In contrast, the International Monetary Fund focuses on financial stability and monetary cooperation, while the Council on Foreign Relations is a think tank, and the Organization of the Petroleum Exporting Countries deals with oil production policies.