Answer: Separation
Step-by-step explanation:
Separation as the result of conflict is the disconnecting or detaching oneself from the situation as an outcome of the whole dispute. Conflicts can raise due to misunderstanding, different opinions, resentments etc which does not lead to agreement by everyone usually and thus people involved in conflict tend to withdraw themselves from that event .
According to the situation in question, Katie has separated herself from the conflict result as they are not able to reach to a particular decision.She ,instead plans to have a road trip with her classmate rather than roommates.