The correct answer would be b
The answer you are looking for is a D.
The steps that countries must take to transition to a mixed-market economy are: they must establish a fair labor market, and they must open up trade to other countries.
A mixed economy is an economic system which mixes elements of market economies with elements of planned economies. It's a mixture of public and private enterprise.
So, to have a country with a mixed-market economy, countries must establish fair labor market to have adequate conditions for the labor market. Moreover, they must open up trade to other international countries. That is to say, to have free trade which doesn't restrict exports or imports.
Jefferson was trying to prevent war with England.
