Match List I with List II

List I		List II
A	Typhoid	I	Fungus
B	Leishmaniasis	II	Nematode
C	Ringworm	III	Protozoa
D	Filariasis	IV	Bacteria

Choose the correct answer from the options given below:

To solve this matching problem, we need to associate each infectious disease in List I with its corresponding causative agent/type of pathogen in List II:

1. Typhoid (A):
Typhoid fever is a symptomatic bacterial infection caused by the bacterium Salmonella enterica serovar Typhi. Therefore, Typhoid matches with Bacteria (IV).
Hence, A - IV.

2. Leishmaniasis (B):
Leishmaniasis is a disease caused by protozoan parasites of the genus Leishmania, which are transmitted through the bite of infected female phlebotomine sandflies. Therefore, Leishmaniasis matches with Protozoa (III).
Hence, B - III.

3. Ringworm (C):
Ringworm is a common skin infection caused by a fungus (dermatophytes), not a worm. Therefore, Ringworm matches with Fungus (I).
Hence, C - I.

4. Filariasis (D):
Filariasis (such as Lymphatic Filariasis) is caused by parasitic roundworms belonging to the phylum Nematoda (nematodes), such as Wuchereria bancrofti. Therefore, Filariasis matches with Nematode (II).
Hence, D - II.

Combining these matches, we get:
A - IV, B - III, C - I, D - II.

This corresponds to the correct option: A-IV, B-III, C-I, D-II.