Answer:
C) conducting free trade
Step-by-step explanation:
The other options are contrary to Laissez-faire capitalism. Tariffs penalize trade and protect certain industries. Laissez-faire capitalists think Unions constitute an obstacle to the direct negotiation of wages between employers and employees. A basic income would come from taxation, and it will undermine the employers' ability to negotiate wages as employees would no be in the immediate need to take any job available.