**Core Concept**
Tetralogy of Fallot is a congenital heart defect characterized by four key features. It involves **cardiac malformations** that affect the heart's structure and function.

**Why the Correct Answer is Right**
The four classic features of Tetralogy of Fallot are: **ventricular septal defect**, **pulmonic stenosis**, **right ventricular hypertrophy**, and **overriding aorta**. These features lead to **cyanosis** and other clinical manifestations.

**Why Each Wrong Option is Incorrect**
**Option A:**
**Option B:**
**Option C:**
Given the nature of the question, without specific options provided, it's challenging to address each incorrect option directly. Normally, one would expect options that include the classic features of Tetralogy of Fallot, with the correct answer being the one that does not belong.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that Tetralogy of Fallot is one of the most common **cyanotic congenital heart defects**. Understanding its components and how they contribute to the patient's symptoms is crucial.

**Correct Answer:** D.