Answer: a. They benefited from the trade networks.
Step-by-step explanation:
People in trade networks are involved in the buying and selling of goods sometimes across borders. These people deal in goods that they are either interested in or that others will be which would enable them to sell the goods and make a profit.
Such people are therefore benefitting from the trade networks as they get something out of it be it their needs and wants being satisfied, or profit being made.