Thank you for the opportunity to help you with your question!
A free market is a market economy system in which the prices for goods and services are set freely by consent between vendors and consumers, in which the laws and forces of supply and demand are free from any intervention by a government, price-setting monopoly, or other authority.
As the market is free the only motive of the entrepreneurs is only profit or generation of maximum revenue.
So the correct answer is option C
I hope this would help you,but if you have any doubt regarding this,you can surely ask.