Question

What accounts for the most pollution to the river in eastern India?
1. chemical pollution
2. pesticide runoff
3. oil companies
4. human waste

Answer 1

India is full of p00 but no loo. 
It should be 4. "human" waste

Answer 2

India does not have reliable plumbing systems so everyone does their business in public, when it rains the runoff of human waste goes to the rivers