Which 19th-century british group would most likely object to the government regulation of businesses? 1.clergy2.socialists3.labor unions4.laissez-faire capitalists?

The correct answer is 4. laissez-faire capitalists.
Laissez-faire capitalists represent the group of people who would most likely object to the government regulation of business in the 19th century. Laissez-faire represents the system of trade which is free from government interference, so obviously this group would be against that.