**Core Concept**
Systemic de-sensitization therapy is a type of behavioral therapy used to treat anxiety disorders, particularly phobias. It involves a gradual and controlled exposure to the feared object or situation, with the goal of reducing the individual's anxiety response over time.

**Why the Correct Answer is Right**
Systemic de-sensitization therapy is based on the concept of classical conditioning, as described by Ivan Pavlov. In this therapy, the individual is gradually exposed to the feared stimulus in a controlled and safe environment, starting with a weak or mild form of the stimulus. As the individual becomes accustomed to the stimulus, the therapist gradually increases the intensity or duration of the exposure, allowing the individual to become desensitized to the anxiety-provoking stimulus. This process is facilitated by the individual's ability to learn new coping mechanisms and strategies to manage their anxiety response.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to systemic de-sensitization therapy, which is focused on treating anxiety disorders through exposure and desensitization.
**Option B:** Cognitive-behavioral therapy (CBT) is a type of therapy that focuses on changing maladaptive thought patterns and behaviors, but it is not the same as systemic de-sensitization therapy.
**Option C:** This option is not a recognized form of therapy, and it does not accurately describe systemic de-sensitization therapy.

**Clinical Pearl / High-Yield Fact**
Systemic de-sensitization therapy is often used in conjunction with other forms of therapy, such as CBT, to treat complex anxiety disorders.

**Correct Answer:** C.