Which of the following encourages free trade among member nations?

The option that encourages free trade among member nations is the EEC (European Economic Community), now known as the European Union (EU). The EEC was created to establish a common market among its member countries and eliminate trade barriers, including tariffs and quotas, to promote free trade. This allows member countries to trade goods and services with each other without restrictions, thus promoting economic growth and increasing competitiveness. The EU is now one of the world's largest trading blocs, with 27 member states and a population of over 446 million people.