Which one of the following agricultural practices is eco-friendly?

Organic farming is considered the most eco-friendly practice because it relies on natural processes and biological inputs rather than synthetic chemicals. It focuses on maintaining soil health through crop rotation, green manure, and biological pest control. This approach prevents soil degradation, protects groundwater from chemical runoff, and preserves biodiversity.

In contrast, shifting cultivation leads to deforestation and soil erosion. The cultivation of high yielding varieties often requires heavy use of chemical fertilizers and pesticides which can damage the ecosystem. Growing plants in glass houses is a resource intensive controlled environment practice that does not inherently focus on ecological balance in the same way that organic farming does.