Which Argument Best Justifies the Notion That Interest Groups Are

Which argument best justifies the notion that interest groups are inclusive and foster diversity in the American political system?

A) Interest groups often accept members who do not fully agree with that group's goals.
B) The American system of government by nature encourages a wide range of political organizations, including interest groups.
C) Any type of group within American culture has the ability to organize and attempt to influence public policy.
D) Most interest groups are very accepting of people of all walks of life and backgrounds.