Final answer:
No-till farming helps conserve soil and water, increases soil fertility by protecting soil organisms, and aids in preventing soil erosion, making it an environmentally beneficial agricultural practice. The correct option is option B.
Step-by-step explanation:
Soil tilling is a common agricultural practice that prepares the soil for planting by breaking up compacted clods, but it has several negative consequences such as reducing water absorption, destroying soil microbes and earthworms, and promoting soil erosion. On the other hand, no-till farming is an alternative approach that offers a range of benefits for the soil and the environment.
No-till farming conserves soil moisture, protects soil organisms which in turn can increase soil fertility, encourages water infiltration, and helps to prevent topsoil erosion. This approach can also lower farming costs, reduce greenhouse gas emissions, and contribute to carbon sequestration in the soil, therefore, helping in the fight against global warming. No-till practices have been successful in various parts of the world, including Latin America, South Asia, and Africa, supporting sustainability on both local and global scales.
Therefore, the correct answer to the student's question about the benefit of no-till farming is It can help conserve Earth's soil and water while increasing soil fertility.