Adam smith believed the government’s role in laissez-faire capitalism was

to distribute wealth equally.
to set prices and wages.
to control the economy.
to leave the economy alone.

be sure before you answer !

Laissez-faire capitalism focuses on minimal governmental intervention. Adam Smith's most famous term, "the invisible hand" also says something similar, but with more complexity. His work "The Wealth of Nations" is worth reading, I suggest you give it a try when you have time.

Short version: The last option is the correct one.