Maintaining a competitive business environment is an important role of in the economy.

B. Government

Explanation:

The understanding of its business environment helps an organization to make realistic plans and ensure their effective implementation. It also helps the business enterprise in identification of opportunities and threats.

Government regulation at the federal and state levels has a major impact on how businesses operate in the United States. In order to manage business activities in a complex society and to help respond to changing societal needs, governments at all levels have created numerous agencies and regulatory acts

john maynard keynes developed new economic theories in response to the stock market crash of 1929. great depression of the 1930s. first and second world wars. economic boom of the 1950s.

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.