The two types of farm owning developed slavery because the owners of them were allowed to have slaves. The encomienda system was based on the idea that conquerors should have slaves to work for them, and it similarly applied to sugar colonies that had slaves on them. They were responsible for a lot of trafficking of slaves from Africa.
Give the large amounts of sugar and other goods brought to New England through triangle trade, North America would have benefited most. The Caribbean received manpower in the form of slaves from Africa, while Africa sold its mapower in exchange for goods (lots of rum), meaning it most likely benefited the least.
Thee answer is D, hope it helped