Question

Which of the following factors is responsible for polluting river water?

• A. Releasing treated waste into rivers
• B. Frequent flooding
• C. Dumping industrial waste into rivers
• D. Releasing disinfected water into river

Answer 1

The correct option is C Dumping industrial waste into rivers

Releasing treated waste or already disinfected water into the rivers does not cause water pollution.
Frequent flooding makes the rivers overflow.
However, industrial toxic wastes cause water pollution. Thus, releasing industrial waste into the rivers causes river pollution.