The correct answers are C) seal of approval function, and the other question answer is A) watchdog function.
Political parties in the United States develop platforms that include public politics, economic and social programs to help the citizens and persuade an elector to vote for their candidates. Their main function is to nominate candidates for public offices. Once in power, their candidates must deliver the proper results to maintain their party on power for many years. They have to create plans and programs that benefited the people who voted for them. In the United States, the Republican Party and the Democratic Party have shared the presidency.