The correct option is (2). ● Filariasis is the disease caused by Wuchereria bancrofti, filarial worm. ● Amoebiasis/Amoebic dysentery is caused by a protozoan parasite Entamoeba histolytica in the large intestine of human. ● Pneumonia is caused by bacteria like Streptococcus pneumoniae and Haemophilus influenzae. ● Ringworm is caused by fungi belonging to genera Microsporum, Trichophyton and Epidermophyton.