What is one way in which third parties influence public policy?

a. They silence new policies from being presented to the electorate.
b. They give all major party candidates an edge to win the elections.
c. They bring issues to light on the national stage that the two major parties may purposely overlook.
d. They force senators to pass laws.

c. They bring issues to light on the national stage that the two major parties may purposely overlook.