Alice's Three Children Are Driving Her Crazy

Alice's three children are driving her crazy. They are constantly squabbling, calling one another names, and generally tormenting one another. To preserve what's left of her sanity, Alice has decided to try to convince the youngsters to get along. Based on the contact hypothesis, what's the best way to do this?

A) Cook a good, hearty meal and have them all gather at the table.
B) Promise to take them to a funny movie only if they clean the playroom in thirty minutes.
C) Send them outside to play in the yard.
D) Have a family meeting so that they can air their grievances.