Why does the laissez faire approach to economic policy imply only minimal government involvement? When does it make sense for the government to intervene in a perfectly competitive market setting?

In a market-based economy, how may governmental policies or regulation impact the inputs market? They can affect workers' willingness to work or firms' willingness to hire. They can affect consumers' willingness to buy They can affect consumers' willingness to buy or firms willingness to produce. They can affect firms' willingness to produce. They can affect workers' willingness to work. They can affect firms' willingness to hire.