Final answer:
Behavior therapy is the therapy that employs principles of learning to help clients change undesirable behaviors. It uses techniques such as classical and operant conditioning to modify behavior, differentiating it from cognitive therapy, which focuses on changing thought patterns.
Step-by-step explanation:
The type of therapy that involves a therapeutic orientation, utilizing principles of learning to help clients modify undesirable behaviors, is A. behavior therapy. Behavior therapy relies on the idea that all behaviors are learned and that unhealthy behaviors can be changed through the use of various learning techniques. Techniques commonly used in behavior therapy include classical conditioning, operant conditioning, and social learning.
Behavior therapists might use a range of strategies to help clients unlearn maladaptive behaviors and replace them with healthier ones. This could include exposure therapy, where clients gradually face a feared situation until the fear response is extinguished, or methods that reinforce positive behaviors and discourage negative ones.
Also, it's worth noting that although cognitive therapy does take behaviors into account, it is more focused on changing thought patterns and the way individuals perceive and interpret the world, which in turn affects their behavior.