Step 1: Understanding the Question:
Filariasis is a parasitic disease caused by microscopic, thread-like worms. The question asks for the specific insect vector that carries these larvae to humans.
Step 3: Detailed Explanation:
1. Filariasis (Elephantiasis) in India is primarily caused by the helminth Wuchereria bancrofti.
2. These parasites are transmitted through the bite of an infected female mosquito.
3. The Culex quinquefasciatus mosquito is the most common vector for this specific parasite.
4. Anopheles is the vector for Malaria.
5. Aedes is the vector for Dengue, Zika, and Yellow Fever.
Step 4: Final Answer:
The vector for Filariasis is the Culex mosquito (C).