How Did the National Party Organizations Change to Avoid Public

How did the national party organizations change to avoid public displays of discord and conflict during national conventions?

A) They dissolved the party organization altogether and gave power back to the voters.
B) They prohibited the press from reporting on, filming, or photographing convention activities.
C) They eliminated the use of party conventions altogether and made the selection process secret.
D) They planned the party conventions to be more of an advertisement for the party ticket.