Which of the following best explains the role of superdelegates?

A. They only vote in closed primaries
B. They only vote in caucuses
C. They are not pledged to a candidate and may vote for whomever they choose at the convention
D. They are pledged to a candidate but are allowed to change their vote at the convention.

C. They are not pledged to a candidate and may vote for whomever they choose at the convention

Superdelegates, who are officially known as unpledged delegates in the Democratic Party, are party leaders and elected officials who attend the party's national convention and have the freedom to support any candidate for the presidential nomination. Unlike pledged delegates, who are bound to support candidates based on the results of primaries and caucuses, superdelegates can exercise their own discretion. However, it's important to note that rules regarding superdelegates can change, and their role has been subject to intense debate within the Democratic Party.