The correct option is C a - iii, b - iv, c - i, d - ii
Elephantiasis or filariasis is a disease caused by the helminth worm, Wuchereria bancrofti. The worms invade and live for many years in the lymphatic vessels of the limbs, leading to chronic inflammation and swelling of the limbs. The genital organs might also be infected, resulting in major deformities.
Amoebiasis is caused by the protozoan Entamoeba histolytica and the infection spreads through the release of cysts in the fecal matter.
Pneumonia is a respiratory disorder which leads to acute infection and inflammation of alveoli. The causative agent of pneumonia is Haemophilus influenzae. The bacteria attack the lungs and multiplies there, leading to severe problems in respiration. It spreads through air droplets.
The fungi belonging to the genera Trichophyton, Microsporum and Epidermophyton cause an infection called ringworm. Dry scaly lesions are a common symptom of this fungal infection.