According to the Text, the Primary Check on the Interest

According to the text, the primary check on the interest group advantages of business interests is

A) the power of labor groups to outspend business groups.
B) environmental groups employing more lobbyists.
C) stronger lobbying capacity of groups representing low-income people.
D) the spotlight of sustained public attention-the power of democracy.
E) the commitment of one individual whistleblower.