**Core Concept**
The question is testing the understanding of the natural history of childhood disorders, specifically those that improve with age. This concept is crucial in pediatrics, as it helps clinicians make informed decisions about treatment and management.

**Why the Correct Answer is Right**
The correct answer is likely to be a disorder that is characterized by a good prognosis and spontaneous resolution with age. This could include conditions such as **Attention Deficit Hyperactivity Disorder (ADHD)**, **Sleep Terrors**, or **Nightmares**. For example, ADHD is a neurodevelopmental disorder that often improves with age, as children mature and develop better coping mechanisms.

**Why Each Wrong Option is Incorrect**
* **Option A:** Disorders such as **Autism Spectrum Disorder (ASD)** or **Cerebral Palsy** often do not improve with age and may even worsen as children grow and develop.
* **Option B:** Conditions like **Tourette's Syndrome** can persist into adulthood and may require ongoing management.
* **Option C:** Disorders such as **Anxiety Disorders** or **Depressive Disorders** can persist into adulthood and may require ongoing treatment.

**Clinical Pearl / High-Yield Fact**
It's essential for clinicians to have a good understanding of the natural history of childhood disorders, as this can inform treatment decisions and help set realistic expectations for families.

**Correct Answer:** D. **Enuresis**