(question in attached screenshot)
a. chart i best reflects a period of free trade. it illustrates that governments that allow free trade cannot efficiently regulate the market, which leads to market inefficiencies and less than optimal production.

b. chart i best reflects a period of free trade. it illustrates that governments that allow free trade encourage their citizens to produce a variety of goods by expanding their access to new markets.

c. chart ii best reflects a period of free trade. it illustrates that governments that allow free trade can specialize and produce the goods that they produce most efficiently and trade for other goods.

d. chart ii best reflects a period of free trade. it illustrates that governments that allow free trade may cause the production of necessary goods to fall to zero, leaving the country unable to fulfill the needs of its citizens.