**Core Concept**
Amyloidosis is a group of diseases characterized by the deposition of insoluble amyloid fibrils in various tissues and organs. This deposition leads to disruption of normal tissue structure and function, resulting in a range of clinical manifestations.

**Why the Correct Answer is Right**
Amyloidosis can affect any organ system, but it is commonly found in the kidneys, heart, liver, and nervous system. The deposition of amyloid fibrils triggers an inflammatory response, leading to tissue damage and organ dysfunction. In some cases, amyloidosis is associated with underlying conditions such as multiple myeloma, chronic inflammation, or genetic mutations.

**Why Each Wrong Option is Incorrect**
**Option A:** (not provided)
**Option B:** (not provided)
**Option C:** (not provided)
**Option D:** (not provided)

**Clinical Pearl / High-Yield Fact**
Amyloidosis can be classified into primary (e.g., AL amyloidosis associated with multiple myeloma) and secondary amyloidosis (e.g., AA amyloidosis associated with chronic inflammatory conditions). Early diagnosis and treatment of underlying conditions can help prevent or slow the progression of amyloidosis.

**Correct Answer:** D.