Explanation

Soil conservation aims at maintaining the overall health status and capacity of the ecosystem. Source 1 defines 'Soil degradation' as a change in soil health status resulting in a diminished capacity... and mentions that 'Soil Improvement concerns in the first place the appropriate management of problem soils. ' While the text doesn't explicitly define 'conservation,' option B aligns best with maintaining ecological function, which is the goal described for managing soil health.