Task: Class Definition Understanding (ontology: Earth_Environment/EnvironmentOntology)

Which of the following definitions best describes 'farm soil'?

A. A portion of soil which is part of a cropland or a rangeland biome.
B. Phaeozems accommodate soils of relatively wet grassland and forest regions in moderately continental climates. Phaeozems are much like Chernozems and Kastanozems but are leached more intensively. Consequently, they have dark, humus rich surface horizons that, in comparison with Chernozems and Kastanozems, are less rich in bases. Phaeozems may or may not have secondary carbonates but have a high base saturation in the upper metre of the soil.
C. Soil in which trees from an orchard grow.
D. Alisols are soils that have a higher clay content in the subsoil than in the topsoil as a result of pedogenetic processes (especially clay migration) leading to an argic subsoil horizon. Alisols have a low base saturation at certain depths and high-activity clays throughout the argic horizon. They lack the albeluvic tonguing as in Albeluvisols. They occur predominantly in humid tropical, humid subtropical and warm temperate regions.

Answer: A portion of soil which is part of a cropland or a rangeland biome.