You Are Working with a Church Youth Group and Have

You are working with a church youth group and have noticed that the children have divided into two subgroups that are somewhat antagonistic towards each other. What would be the most effective way to reduce the hostility between the two subgroups?

A) Have the entire group take part in a fun, noncompetitive activity such as going out for pizza.
B) Create a common goal for the two subgroups that requires co-operation, such as raising enough money to go on a field trip.
C) Set up overt competitions, such as softball games or trivia contests, between the subgroups.
D) Nothing. Once subgroups become hostile, there's no effective way to reduce their hostility.