Why is organic farming considered useful for the environment?

Correct answer: It reduces chemical use

Organic farming generally relies on compost, manure, crop rotation, biological pest control, and other practices that reduce dependence on synthetic fertilisers and pesticides. Lower chemical use can reduce the risk of harmful residues entering soil, streams, and groundwater, while organic matter may improve soil structure and support soil organisms. Therefore, option A is the best answer. Organic farming still requires careful management and is not automatically impact-free, but the environmental benefit tested here is the reduction of synthetic chemical inputs. Deforestation, increased water pollution, and removal of soil are not defining purposes or necessary consequences of organic farming; in fact, many organic practices aim to protect soil and water.