Which pathogen causes elephantiasis?

Adult $Wuchereria$ $bancrofti$ attacks which of the following?

$Wuchereria bancrofti$ is carried by:

Which of the following is $NOT$ an effect of the filarial worm?

While examining a patient, the following symptoms are observed:
$(i)$ Chronic inflammation in the lymphatic vessels of the lower limbs.
$(ii)$ Genital organs are also affected.
What is the disease diagnosed by the doctor?

In Filaria, what does the larval form resemble?