**Core Concept**
Secondary amyloidosis, also known as AA amyloidosis, is a rare condition characterized by the deposition of amyloid fibrils in various organs and tissues of the body. This type of amyloidosis is a complication of chronic inflammation or infection, leading to the production of serum amyloid A (SAA) protein, which eventually forms amyloid fibrils.

**Why the Correct Answer is Right**
The deposition of amyloid fibrils in secondary amyloidosis is a result of the body's chronic inflammatory response. In the presence of chronic inflammation, the liver produces high levels of SAA protein, which is an acute-phase reactant. SAA protein is then transported to other parts of the body, where it can accumulate and form amyloid fibrils, leading to organ damage and dysfunction. This process is often seen in patients with chronic infections, such as tuberculosis, or inflammatory diseases, such as rheumatoid arthritis.

**Why Each Wrong Option is Incorrect**
* **Option A:** While chronic kidney disease can lead to secondary amyloidosis, it is not the most common cause. Chronic kidney disease can lead to the deposition of amyloid fibrils, but it is more commonly associated with primary amyloidosis.
* **Option B:** Chronic liver disease is not a primary cause of secondary amyloidosis. While liver disease can lead to the production of SAA protein, it is not a common cause of amyloid deposition in the body.
* **Option C:** Chronic infections, such as tuberculosis, are a common cause of secondary amyloidosis. The chronic inflammatory response associated with these infections can lead to the production of SAA protein and subsequent amyloid deposition.

**Clinical Pearl / High-Yield Fact**
One important point to remember is that secondary amyloidosis is often associated with chronic infections or inflammatory diseases, and it can lead to significant organ damage and dysfunction if left untreated.

**Correct Answer:** C. Chronic infections, such as tuberculosis, are a common cause of secondary amyloidosis.