Concept:Ley farming is the alternating cultivation of arable crops and forage or grass crops on the same land.
Explanation:In this practice, a farmer first grows arable crops, such as grains, for food.
Then the same land is planted with forage crops that serve as animal feed.
These two types of crops are grown alternately on the same piece of land.
This rotation helps maintain soil fertility and provides grazing or fodder for livestock.
The name given to this system of alternating arable and forage crops is ley farming.
Mixed farming involves raising livestock and growing crops together, but not necessarily in alternation.
Alley farming means planting crops between rows of trees or shrubs.
Pastoral farming is mainly the rearing of animals on natural pasture.
Thus, the practice described in the question matches the definition of ley farming.
Answer:A. ley farming