1. Extinction of behavior maintained by positive reinforcement works by:Adding a reinforcer for the problem behaviorTaking away the reinforcer for problem behaviorNot allowing the individual to escape the problem behaviorAllowing the individual to escape the problem behavior2.Differential reinforcement works by:Reinforcing only the behaviors that should be increased while removing reinforcement from behaviors that should be decreased.Reinforcing only the behaviors that should be decreased while removing reinforcement from behaviors that should be increased.Reinforcing all behaviors a person engages in and punishing those that appear to be inappropriate.Ignoring all behaviors a person engages in and reinforcing those that appear to occur more frequently.3.Extinction works by:Eliminating the source of problem behaviorEliminating the source of desirable behaviorAbruptly stopping punishers for the problem behaviorAbruptly stopping reinforcement for problem behavior