Final answer:
Behavioral therapy is the treatment that applies learning principles, such as conditioning, to eliminate unwanted behaviors.
Step-by-step explanation:
The treatment that applies learning principles, such as conditioning, to eliminate unwanted behaviors is Behavioral therapy. Behavioral therapy focuses on modifying behavior through techniques such as classical conditioning and operant conditioning. In classical conditioning, an unwanted behavior is paired with a negative stimulus to discourage that behavior, while in operant conditioning, the unwanted behavior is modified through positive and negative reinforcement.