More context?? itd be greatly appreciated, so i could help you.
The correct answer is - c. exportation of tobacco.
The Southern colonies got very wealthy because of the production and exportation of tobacco. These colonies were situated on a place where the tobacco was flourishing and they used it to the maximum. The tobacco itself became very popular in Europe after it was introduced, and the demand for it was enormous, which gave the Southern colonies reliable and sure market with high demand that made them a lot of profit.
The command economy is controlled by a central force like the government. Market economies are controlled by market forces