Explanation:

Causative agent of elephantiasis is Wuchereria bancrofti and the commonly affected body part is genital organs.

Wuchereria bancrofti is a human parasitic worm that is the major cause of lymphatic filariasis. It is one of the three parasitic worms, together with Brugia malayi and B. timori, that infect the lymphatic system to cause lymphatic filariasis. These filarial worms are spread by a variety of mosquito vector species.