How many countries are in the Commonwealth?

The Commonwealth is an intergovernmental organization made up of 56 member countries, which are primarily former territories of the British Empire. This number reflects a diverse range of nations, including some of the world's largest and smallest countries, which engage in various cooperative activities including economic, social, and cultural initiatives. The current membership indicates the Commonwealth's broad appeal and the ongoing relevance of its principles, such as democracy, human rights, and the rule of law.

While other options may present numbers that could seem plausible, they do not accurately represent the current composition of the Commonwealth. The total of 56 is consistent with recent data, making it the correct choice in this context.