**Core Concept**
The concept directed against prevention of risk factors of coronary artery disease is primarily aimed at reducing the incidence of atherosclerosis, a condition characterized by the buildup of plaque in the arterial walls. This buildup can lead to reduced blood flow to the heart, resulting in coronary artery disease.

**Why the Correct Answer is Right**
The correct concept is focused on addressing modifiable risk factors such as hypertension, hyperlipidemia, smoking, and diabetes mellitus, which are significant contributors to the development of atherosclerosis. By managing these risk factors through lifestyle modifications and pharmacological interventions, the progression of coronary artery disease can be slowed or even reversed. This approach involves the use of medications such as statins to lower cholesterol levels, beta-blockers to control blood pressure, and ACE inhibitors to reduce blood pressure and prevent cardiac remodeling.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not address the primary goal of preventing coronary artery disease through the reduction of risk factors.
**Option B:** This option is incorrect as it focuses on the treatment of established coronary artery disease rather than its prevention.
**Option C:** This option is incorrect as it does not specifically target the prevention of coronary artery disease through the modification of risk factors.

**Clinical Pearl / High-Yield Fact**
A key aspect of preventing coronary artery disease is the identification and management of modifiable risk factors, particularly hypertension and hyperlipidemia. Early intervention and lifestyle modifications can significantly reduce the risk of developing coronary artery disease.

**Correct Answer: D. Primary Prevention**