The correct answer is C) each parties' presidential nominee is selected through primaries and caucuses.
The statement that best completes the diagram of the presidential election process "each parties' presidential nominee is selected through primaries and caucuses."
A primary is a method to select a candidate like in a general election. The event is held in all states and people vote in secret for their favorite candidate. Majority wins. Caucus is the meeting of supporters of a party and decide their delegates to choose a possible candidate in the next election.
