The answer is c) the Heritage Foundation and the Wall Street Journal.

The Index of Economic Freedom is published each year by the Wall Street Journal and the Heritage Foundation since 1995. The index measures the degree to which people are free to work, invest, and consume as they want or need. It also evaluates the flow of products and capital as well as the state or government regulations that relate to economic activities. The Index of Economic Freedom focuses on 12 different aspects of economic freedom like labor, financial, and trade freedom.