Its not c for plato either

What was the effect of the supreme court’s ruling in citizens united v. federal election commission? a. it removed limitations on corporate funding of political broadcasts. b. it removed all limits on campaign contributions by interest groups. c. it prohibited corporations and businesses from contributing to political campaigns. d. it prohibited interest groups from contributing to individual candidates.

Idid a trial but its not letting me view the questions without signing me out.

How does the right to file a lawsuit protect people?