It’s important for economies to invest in education and training of their people in order to develop new technologies because, when more people are becoming educated there are also going to be more advancements in that society.
For New England Colonies their activities are fishing, lumber and whaling.
For Middle Colonies they depend on agriculture (Mostly the production of wheat), shipping and trade.
Southern Colonies trade and agriculture (Mostly tobacco and cotton).
Answer:
A. schools and other services.
Is this a question? If it is can you be more specific.