Match the following options correctly:

(a)- iii, (b)- iv, (c)- ii, (d)- i

Water pollution is a source of various water-borne diseases. The diseases commonly caused due to contaminated water are diarrhea, intestinal worms, hepatitis, etc. The World Health Organization shows that about one-fourth of the communicable diseases in India are water-borne.

Acid rain is caused by air pollution.

Dharavi in Mumbai is largest slum in Asia

Jhabua district is located in the westernmost agro-climatic zone in Madhya Pradesh. It is, in fact, one of the five most backward districts of the country.