The reason that best explains why the Industrial Revolution led to the development of laissez-faire capitalism is:
Private businesses began to produce their own wealth.
During the Industrial Revolution, advancements in technology and production methods allowed private enterprises to grow and thrive, leading to the belief that minimal government intervention in the economy would enable these businesses to flourish even further. This idea became a cornerstone of laissez-faire capitalism, which advocates for a free market with little to no government regulation.