During the Progressive Era, the Direct Primary Was Created and Implemented

During the Progressive era, the direct primary was created and implemented. What was the purpose of this direct primary?

A) It bypassed the voters and placed the election of candidates in the hands of the governor.
B) It cut out the campaign phase and proceeded directly to the voting phase.
C) It gave voters an opportunity to play a role in selecting party candidates.
D) It eliminated the power of the political parties.
E) It eliminated the voter registration process so voters had less chance of losing their right to vote.