Answer:
The correct answer is letter "C": Each state or country can adopt large-scale production techniques that allow lower per-unit costs of production.
Step-by-step explanation:
Economies of Scale mean output becomes more efficient as the number of goods produced increases. In certain cases, businesses that reach economies of scale, by rising production, lower the overall cost of their goods. This is because fixed costs are distributed across a large number of products that are required to produce a good.
Therefore, states in the U.S. or countries in the European Union can achieve economies of scale by mass-producing goods while reducing unitary costs of output.