**Core Concept**
Flooding is a behavioral therapy technique used to treat anxiety disorders and phobias by exposing the patient to the feared object or situation without any gradual or controlled exposure. This technique is based on the concept of habituation, where the patient's anxiety response decreases over time due to repeated exposure to the feared stimulus.

**Why the Correct Answer is Right**
Flooding is a type of exposure therapy, which involves exposing the patient to the feared stimulus in a controlled environment. The goal of flooding is to allow the patient to experience the anxiety response in a safe and controlled setting, eventually leading to habituation and a decrease in anxiety levels. In flooding, the patient is exposed to the feared stimulus for an extended period, usually until the anxiety response decreases, thereby reducing the patient's avoidance behavior.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because flooding is not a type of cognitive-behavioral therapy (CBT), although it may be used in conjunction with CBT techniques.
**Option B:** This option is incorrect because flooding is not a type of medication or pharmacological treatment, but rather a behavioral therapy technique.
**Option C:** This option is incorrect because flooding is not a type of relaxation technique, such as deep breathing or progressive muscle relaxation.

**Clinical Pearl / High-Yield Fact**
Flooding is a highly effective treatment modality for anxiety disorders, particularly in cases where the patient's avoidance behavior is severe and interferes with daily functioning. However, it requires careful planning and implementation by a trained therapist to ensure the patient's safety and well-being.

**Correct Answer: B. Flooding is a treatment modality used in behavioral therapy to treat anxiety disorders and phobias.**