The correct answer is A. Belgium, Netherlands, Luxembourg.
The Benelux Economic Union is an economic union between Belgium, the Netherlands, and Luxembourg. It was founded in 1958 and is one of the oldest economic unions in the world. The Benelux Economic Union aims to promote economic cooperation and integration between its member states. It does this by removing trade barriers, harmonizing economic policies, and coordinating economic development.
The Benelux Economic Union has been successful in promoting economic growth and prosperity in its member states. It has also played a significant role in the development of the European Union.
Option B is incorrect because Indonesia, Kuwait, and Libya are not member states of the Benelux Economic Union.
Option C is incorrect because Algeria, Bahrain, Comoros, and Iraq are not member states of the Benelux Economic Union.
Option D is incorrect because Guyana, Jamaica, and Trinidad and Tobago are not member states of the Benelux Economic Union.