Your answer should be C.
They aren't necessarily cheaper, nor does it matter about the quantity, they also don't help the land much.
Answer: made money from plantation farming and trading of enslaved people
The Southern colonies did not make so much money from shipping. They liked slavery, they would never want it abolished. They were not so diverse, either. The answer is made money from plantation farming and trading of enslaved people.
Land needed to be cleared for farming,and since deforestation is already a problem.