**Core Concept**
Enuresis, also known as bedwetting, is a common pediatric condition characterized by the involuntary urination during sleep. Management of enuresis often involves a combination of behavioral interventions, lifestyle modifications, and pharmacological treatments.

**Why the Correct Answer is Right**
The correct answer is the one that has the least chances of relapse due to its long-term effectiveness and patient compliance. Behavioral interventions, such as bladder training and alarm therapy, have been shown to be effective in managing enuresis. These methods work by retraining the bladder and bowel to maintain continence during sleep. The success rate of these interventions is high, and they have a low rate of relapse. One such behavioral intervention is the **Moisture Alarm**, which is a device that detects moisture and wakes the child up as soon as they start to urinate, thus breaking the cycle of enuresis.

**Why Each Wrong Option is Incorrect**
**Option A:** _Imipramine_ has a moderate success rate in managing enuresis, but its long-term efficacy is limited due to the risk of side effects and the development of tolerance.
**Option B:** _Desmopressin_ is a medication that works by reducing the amount of urine produced by the kidneys. While it can be effective in the short-term, its long-term use is limited due to the risk of hyponatremia and the development of tolerance.
**Option C:** _Oxybutynin_ is an anticholinergic medication that can be used to manage enuresis, but its use is limited due to its side effects, such as dry mouth, constipation, and urinary retention.

**Clinical Pearl / High-Yield Fact**
Behavioral interventions, such as bladder training and alarm therapy, are often more effective in managing enuresis than pharmacological treatments due to their long-term effectiveness and low rate of relapse.

**Correct Answer: C. Oxybutynin**