Answer:
The correct answer is common market.
Step-by-step explanation:
A common market is an agreement between two or more countries in order to ensure the free movement and exchange of goods, services and production factors between their borders.
In a common market, member countries agree to eliminate, among them, tariff barriers, restrictions on the movement of people, investments or transfers and obstacles to the establishment of companies. At the same time, common economic policies are agreed in order to enhance joint growth.