**Core Concept**
The underlying principle being tested is the association between specific clinical manifestations and a genetic disorder. **Tuberous Sclerosis Complex (TSC)** is a genetic disorder characterized by the growth of numerous non-cancerous tumors in many parts of the body.

**Why the Correct Answer is Right**
TSC is known to cause a variety of symptoms including **seizures**, **mental retardation**, and **sebaceous adenomas**. The condition is associated with mutations in the **TSC1** or **TSC2** genes, leading to the formation of **hamartias** (benign tumors) in organs such as the brain, skin, and kidneys.

**Why Each Wrong Option is Incorrect**
**Option A:** Not provided, assuming it's not related to TSC.
**Option B:** Not provided, assuming it's not related to TSC.
**Option D:** Not provided, assuming it's not related to TSC.

**Clinical Pearl / High-Yield Fact**
TSC is a classic example of a **phakomatosis**, a group of disorders characterized by **hamartomatous** growths in multiple organs. Recognizing the combination of seizures, mental retardation, and skin lesions like sebaceous adenomas is key to diagnosing TSC.

**Correct Answer:** D. Tuberous Sclerosis.