**Core Concept**
Alport syndrome is a genetic disorder characterized by progressive renal insufficiency, hearing loss, and ocular abnormalities. It is caused by mutations in the COL4A3, COL4A4, or COL4A5 genes, which encode for type IV collagen, a critical component of the glomerular basement membrane.

**Why the Correct Answer is Right**
The patient's symptoms of progressive renal insufficiency and hearing loss, along with the family history of a similar illness, are consistent with Alport syndrome. The condition is inherited in an X-linked pattern, meaning the gene responsible for the condition is located on the X chromosome. Males, who have only one X chromosome, are more likely to express the condition, while females, who have two X chromosomes, may be carriers or have a milder form of the disease. The presence of type IV collagen mutations leads to the degradation of the glomerular basement membrane, resulting in renal failure.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Alport syndrome is a genetic disorder, not a result of a post-infectious or autoimmune process.

**Option B:** This option is incorrect because Alport syndrome is characterized by progressive renal insufficiency and hearing loss, not by episodes of severe hypertension.

**Option C:** This option is incorrect because Alport syndrome is a genetic disorder, not a result of a toxic or metabolic cause.

**Clinical Pearl / High-Yield Fact**
Alport syndrome is an X-linked genetic disorder, making it more likely to affect males. The condition is characterized by the presence of red blood cell casts in the urine, which can be a diagnostic clue.

**Correct Answer:** C. Alport syndrome.