**Core Concept**
Cysticercosis is a parasitic infection caused by the larvae of Taenia solium, a type of tapeworm. The larvae can invade various tissues, including the brain, muscles, and eyes, leading to a range of clinical manifestations. This condition is a significant public health concern, particularly in regions with poor sanitation and hygiene.

**Why the Correct Answer is Right**
The correct answer is related to the pathophysiology of cysticercosis. When the Taenia solium larvae invade the brain, they can cause neurocysticercosis, a condition characterized by the formation of cysts in the brain tissue. This can lead to seizures, hydrocephalus, and other neurological complications. The larvae can also cause inflammation and tissue damage, leading to a range of symptoms.

**Why Each Wrong Option is Incorrect**
**Option A:** Cysticercosis is caused by the ingestion of undercooked pork containing Taenia solium cysticerci. This is a true statement, as cysticercosis is typically acquired through the fecal-oral route, where contaminated food or water is ingested.

**Option B:** Cysticercosis can cause ocular involvement, leading to conditions such as uveitis and retinal detachment. This is true, as cysticerci can invade the eyes, leading to various ocular manifestations.

**Option C:** The correct answer is related to the fact that cysticercosis is not caused by the ingestion of contaminated soil. While soil can be contaminated with Taenia solium eggs, the infection is typically acquired through the ingestion of contaminated food or water.

**Clinical Pearl / High-Yield Fact**
It's essential to note that cysticercosis can be diagnosed using imaging studies, such as CT or MRI scans, which can show the presence of cysts in various tissues. Treatment typically involves antiparasitic medications, such as albendazole or praziquantel.

**Correct Answer: C. The infection is not caused by ingestion of contaminated soil.**