Which description best explains a riparian buffer and its role in pollution reduction?

Which description best explains a riparian buffer and its role in pollution reduction?

• A. A paved strip that channels water quickly into streams.
• B. A vegetated strip along a water body that sediments and nutrients are captured or slowed, and shade reduces temperature and habitat improves.
• C. A series of concrete walls along a stream to block flow.
• D. A drainage ditch with no vegetation.

Answer: (B)