Concept:The deliberate artificial application of water to agricultural land is known as irrigation.
Explanation:In regions where rainfall is insufficient for crop growth, farmers supply water manually through methods such as canals, pipes, sprinklers, or drip systems.
This human-made distribution of water to farmlands is specifically termed irrigation.
Water resource management involves broader planning and conservation of water supplies, not just field application.
Mulching is the practice of covering soil with materials to reduce evaporation and retain moisture.
Arable farming refers to growing crops on land, without focusing on the water supply method.
Thus, among the given choices, the correct match is irrigation.
Answer:B. irrigation