## Core Concept
Neuroparasites are parasites that infect the nervous system. They can be protozoan, helminthic, or arthropod parasites that specifically target neural tissues, leading to various neurological symptoms and diseases.

## Why the Correct Answer is Right
Toascaris lumbricoides, also known as the roundworm, primarily infects the gastrointestinal tract. Although it can cause larva migrans, which involves migration through tissues, it is not typically classified as a neuroparasite because it does not specifically target the nervous system for its lifecycle or pathogenesis.

## Why Each Wrong Option is Incorrect
* **Option A:** *Toxoplasma gondii* is a well-known neuroparasite, especially in immunocompromised individuals, causing toxoplasmosis which can lead to encephalitis.
* **Option B:** *Naegleria fowleri* is a neuroparasite that causes primary amebic meningoencephalitis, directly infecting the brain.
* **Option D:** *Angiostrongylus cantonensis* is a neuroparasite that causes eosinophilic meningitis, directly infecting the central nervous system.

## Clinical Pearl / High-Yield Fact
A key point to remember is that while *Toxoplasma gondii* is a neuroparasite in immunocompromised patients, it is also a significant concern in congenitally infected infants and in ocular toxoplasmosis in immunocompetent individuals.

## Correct Answer: C. Toascaris lumbricoides