The attitude adopted by Calvin Coolidge that government should play a small role in business affairs is known as what?

3) laissez-faire

Explanation:

Laissez-faire is a French expression that means to let us do, or applied to economics, let the economy self regulate itself. It was not a doctrine developed by Adam Smith, but rather by French economists who supported the idea of no government intervention in the economy.

President Coolidge believed that the government should not interfere with businesses and that businesses themselves were able to create prosperity for the nation.