The correct answer is - South Carolina.
The rice and indigo were the most profitable plants in South Carolina, and the ones that were the most planted as well. South Carolina had excellent conditions for growing rise, and considering the ever-growing demand and great price for it, it was all going great for this colony. The indigo was usually planted on places that were not suitable for growing rice, and it was still the main source of blue dye in England, so the demand for it was constant, and it was also going for great price.