Which of the following is an example of economic sanctions?

Economic sanctions are measures taken by countries or international organizations to restrict trade or financial relations with a particular country, usually to influence its behavior or policies. North Korea serves as a prime example of economic sanctions in practice. Over the years, various nations, including members of the United Nations, have imposed strict economic sanctions on North Korea in response to its nuclear weapons program and other activities deemed threatening to international peace and security. These sanctions have included restrictions on trade, financial transactions, and access to resources, making it challenging for North Korea to sustain its economy.

In contrast, the other options refer to organizations or entities involved in international trade, governance, or finance, rather than being specific examples of economic sanctions. The United Nations is a body that can impose sanctions, but it is not a sanction itself. The World Trade Organization primarily facilitates international trade agreements and dispute resolution, while the International Monetary Fund deals with financial stability and offers monetary assistance, but does not typically engage in imposing sanctions. Thus, North Korea's situation illustrates the direct impact and application of economic sanctions.