**Core Concept**
The process of infarcted myocardium replacement by scar tissue is known as myocardial remodeling, specifically involving the activation of various cellular and molecular mechanisms that lead to the deposition of collagen and other extracellular matrix components, ultimately resulting in the formation of scar tissue.

**Why the Correct Answer is Right**
The correct answer is related to the process of apoptosis, which is a key factor in myocardial remodeling. After a myocardial infarction, the infarcted area undergoes apoptosis, leading to the activation of proteolytic enzymes such as matrix metalloproteinases (MMPs) and the degradation of the extracellular matrix. This process is followed by the migration and proliferation of fibroblasts, which then deposit collagen and other extracellular matrix components, ultimately resulting in the formation of scar tissue. The scar tissue is composed of a dense network of collagen fibers, which provides structural support to the heart but also reduces the contractile function of the affected area.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe the process of myocardial remodeling and scar tissue formation. While inflammation is a key component of the acute phase of myocardial infarction, it is not directly responsible for the replacement of infarcted myocardium by scar tissue.

**Option B:** This option is incorrect because it refers to the process of myocardial hypertrophy, which is a distinct pathological process characterized by the thickening of the heart muscle in response to increased workload or pressure.

**Option C:** This option is incorrect because it refers to the process of myocardial fibrosis, which is a distinct pathological process characterized by the excessive accumulation of collagen and other extracellular matrix components in the heart muscle, leading to the replacement of functional myocardium with non-contractile scar tissue.

**Clinical Pearl / High-Yield Fact**
The formation of scar tissue in the infarcted myocardium can lead to a significant reduction in the contractile function of the affected area, resulting in a decrease in cardiac output and potentially leading to heart failure. It is essential to understand the pathophysiological mechanisms underlying myocardial remodeling to develop effective therapeutic strategies for the treatment of myocardial infarction and heart failure.

**Correct Answer: C. Myocardial fibrosis**