It is estimated that 80% of all __________ is untreated and flows directly into the India's rivers, making it a major source of water pollution. Which answer BEST goes into the blank in the prompt? A) erosion B) raw sewage C) pesticides D) mining surplus
B. raw sewage. (indian sewage flows into the lake and doesn't get treated well. This is why many can't drink the water and they are always dehydrated due to lack of water.)