How did the Middle colonies model a market economy? A. Traded furs to make a profit
B. Only traded to get what they needed to survive
C. Didn't trade anything and only produced enough to survive
D. Traded enough tobacco with other nations to make a profit

the answer is C

Explanation:

The climate and soil of the Middle Colonies were very good for farming. Many farmers grew more than they needed for their families.

so basically they grew there own stuff  for their own and the marketing, it was for free

answer; proximity;