Explanation:

- Infiltration: This is the process where water on the ground surface enters the soil. It's a crucial part of the water cycle and helps recharge groundwater. Correct Answer

- Soaking: While soaking implies absorption, it's not specifically used for the movement of water into the soil.

- Percolation: Similar to infiltration, but more focused on the movement of water through soil layers, rather than the initial soil entry.

- Filtration: This mainly refers to the process of removing impurities or particles from a liquid by passing it through a medium.