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.
A social contract often relates to the legitimacy of the authority someone has over the individual. The relation between legal and natural rights also is a topic of social contract.
