Answer:
The correct answer is Response cost
Explanation:
The response cost method is basically a reaction to an action, it's a toll imposed to a behaviour considered as undesirable or bad, a penalty is impossed to the kid as a reaction of his action, in this case Russ is getting penalised because of breaking the "outdoor equipment outdoors only" rule and the reaction is him giving up his baseball privileges for two weeks, therefore the method employed is the Response cost.
