**Core Concept**
Cysticercosis is a parasitic infection caused by the larval stage of the pork tapeworm (Taenia solium), leading to the formation of cysts in various tissues. This condition is a major public health concern in endemic regions, particularly in developing countries.

**Why the Correct Answer is Right**
The correct answer is related to the pathophysiology of cysticercosis. Cysticerci, the larval form of the parasite, invade the host tissues, leading to an intense inflammatory response. The immune system attempts to wall off the cysts, resulting in the formation of a granulomatous reaction. This reaction can cause damage to surrounding tissues and organs, leading to a range of clinical manifestations, including seizures, muscle weakness, and cognitive impairment.

**Why Each Wrong Option is Incorrect**
* **Option A:** Cysticercosis typically presents with a single cyst in the brain, whereas it more commonly presents with multiple cysts in various tissues. This option is incorrect as it misrepresents the typical presentation of cysticercosis.
* **Option B:** The definitive diagnosis of cysticercosis is made by imaging studies, such as CT or MRI scans, which show the presence of cysts in the tissues. This option is incorrect as it does not accurately reflect the diagnostic approach for cysticercosis.
* **Option C:** Albendazole is the first-line treatment for cysticercosis, particularly for neurocysticercosis. This option is incorrect as it does not accurately represent the treatment options for cysticercosis.

**Clinical Pearl / High-Yield Fact**
It is essential to consider cysticercosis in the differential diagnosis of seizures, particularly in patients from endemic regions, as prompt diagnosis and treatment can significantly improve outcomes.

**Correct Answer: A.**