Concept:Soil nutrient replenishment means restoring lost nutrients through natural or artificial methods.
Explanation:Organic manuring adds decomposed organic matter to the soil.
This improves nutrient content and soil structure.
Fertilizer application supplies essential plant nutrients directly.
This quickly corrects nutrient deficiencies.
Cover cropping protects the soil from erosion.
When cover crops are ploughed in, they add organic matter and nutrients.
Continuous grazing is different because it removes vegetation cover.
It exposes the soil to erosion and leads to further nutrient loss.
Therefore, continuous grazing does not replenish lost soil nutrients.
Answer:C. continuous grazing