Final answer:
Classical economics is the most laissez-faire school of thought.
Step-by-step explanation:
The school of thought that would be considered the most laissez-faire is Classical economics.
Classical economics is a school of thought that believes in a hands-off approach to the economy, with minimal government intervention in the markets. It is based on the ideas of Adam Smith, often referred to as the 'father of capitalism.' The proponents of Classical economics argue that free markets, operating without any government interference, are the most efficient way for the economy to grow and develop.