Concept:Zero-grazing is a system where animals are kept in confinement and are fed with cut grass, allowing the pasture to rest and regrow.
Explanation:In zero-grazing, animals do not graze directly on the pasture field.
Grass is cut and carried to the animals in the shed.
This prevents the pasture from being overgrazed or destroyed.
As a result, the pasture remains available for future growth and use.
Thus, zero-grazing helps to prevent depletion of pasture.
The other options are negative features, such as high labour demand, lack of exercise, and increased pasture management cost, and are not advantages.
Answer:C. prevents depletion of pasture