Under new deal reforms, the biggest change to the traditional role of the federal government was
a. a higher degree of government regulation of business and the economy.
b. a lower degree of government regulation of business and the economy.
c. decreased government support for private/public partnerships.
d. increased government support of laissez-faire capitalism.

explanation:

an oligopoly is a term used to clarify the structure of a particular market, industry, or organization. a market is considered oligopolistic or amazingly focused when it is shared between a few companies.

an interest group is an organization whose members share common concerns, and try to influence government policies that impact those concerns. elected officials frequently complain about the influence of "special interests" on american politics.