The Scope of the Interest Group Universe Has ______

The scope of the interest group universe has ______.

A) shrunk considerably after Congress passed new laws limiting how much contact lobbyists could have with legislators
B) remained constant at the federal level but exploded at the state level because devolution has shifted more policies to the states
C) more than tripled between the 1960s and 1990s, as both private and public interests employ lobbyists in Washington, D.C.
D) remained steady because the policy gridlock in Washington, D.C., has meant fewer opportunities to lobby