Which statement best represents the belief in laissez-faire?

a. government should protect children by prohibiting the employment of anyone under the age of 16.

b. monopolization over any one industry should be made illegal as it hurts other businesses' ability to compete.

c. railroads may not charge farmers higher rates for transporting crops over shorter distances than longer ones.

d. government regulation in the steel business hurts the ability of industries to make a significant profit.