**Core Concept**
The removal of a rewarding response is a fundamental principle in behavioral modification, specifically in the context of operant conditioning. This concept is crucial in understanding various therapeutic approaches aimed at changing maladaptive behaviors.

**Why the Correct Answer is Right**
The correct answer is based on the principle of negative reinforcement, which involves the removal of an unpleasant or undesirable stimulus to increase the frequency of a desired behavior. In this context, the removal of a rewarding response is a form of negative reinforcement that discourages the repetition of a behavior. This concept is closely related to the work of B.F. Skinner, who demonstrated that behaviors can be modified through the use of reinforcement and punishment schedules.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the concept of removing a rewarding response and is therefore incorrect.
**Option B:** This option is incorrect because it does not accurately describe the principle of removing a rewarding response as a form of negative reinforcement.
**Option C:** This option is incorrect because it is not a specific therapeutic approach that involves the removal of a rewarding response.

**Clinical Pearl / High-Yield Fact**
A key concept in behavioral modification is the distinction between positive and negative reinforcement. Positive reinforcement involves the addition of a rewarding stimulus to increase the frequency of a behavior, whereas negative reinforcement involves the removal of an unpleasant stimulus to increase the frequency of a behavior.

**Correct Answer: D. Behavioral Therapy**