Explanation:

- Option 1: Organic

- Organic farming focuses on natural processes and cycles.

- It generally avoids synthetic chemicals, preserving soil health.

- Option 2: Inorganic

- This often involves chemical fertilizers and pesticides.

- Continuous usage can deplete soil nutrients and harm soil structure.

- Option 3: Conventional

- Often relies heavily on chemical inputs for increased yield.

- Can lead to soil degradation and eroded fertility over time.

- Correct Answer as it often degrades soil fertility.

- Option 4: Livestock

- Involves raising animals, which can contribute to soil compaction.

- Properly managed, it can improve soil fertility through manure.