Insurgent political parties that are profoundly dissatisfied with the dominant party' s reign and justificatory ideology always produce factions whose views and aims differ as greatly from each other' s as they do from the dominant party' s. Although these factions ignore their own disagreements for the sake of defeating the dominant party, their disagreements inevitably come forward upon victory. Ttherefore, __. Which one of the following is the most logical completion of the argument? ['it is impossible for the different factions of a victorious insurgent party to effect the compromises necessary to keep the new party in power', 'no victorious insurgent party ever manages to stay in power for as long as the party it displaces did', 'a victorious insurgent party always faces opposition from the party it recently ousted', 'a victorious insurgent party must address the disagreements between its factions if it is to stay in power']