**Core Concept**
The question pertains to the pathophysiology of type 2 diabetes mellitus, specifically the role of insulin resistance and beta-cell dysfunction in the development of the disease. Insulin resistance is a condition in which the body's cells become less responsive to insulin, leading to elevated blood glucose levels.

**Why the Correct Answer is Right**
Insulin resistance is a key feature of type 2 diabetes mellitus, characterized by a decrease in insulin receptor density and tyrosine kinase activity, leading to impaired glucose uptake in peripheral tissues. The pancreas compensates for insulin resistance by increasing insulin secretion, but eventually, beta-cell dysfunction and decreased insulin production occur, contributing to hyperglycemia. This complex interplay between insulin resistance and beta-cell dysfunction is a hallmark of type 2 diabetes mellitus.

**Why Each Wrong Option is Incorrect**
**Option A:** This statement is true, as insulin resistance is a primary factor in the development of type 2 diabetes mellitus.
**Option B:** This statement is true, as beta-cell dysfunction is a key feature of type 2 diabetes mellitus, leading to decreased insulin production.
**Option C:** This statement is false, as type 1 diabetes mellitus is an autoimmune disease characterized by the destruction of beta-cells, whereas type 2 diabetes mellitus is primarily associated with insulin resistance and beta-cell dysfunction.

**Clinical Pearl / High-Yield Fact**
The pathophysiology of type 2 diabetes mellitus is complex and multifactorial, involving both insulin resistance and beta-cell dysfunction. Understanding the interplay between these factors is crucial for effective management and treatment of the disease.

**Correct Answer: C. Type 1 diabetes mellitus is characterized by the destruction of beta-cells.**