What is a "drip irrigation" system?

A drip irrigation system is designed to deliver water directly to the root zone of plants, which optimizes water usage and encourages healthy plant growth. By utilizing a network of tubing and emitters, it allows for precise application of water, reducing evaporation and runoff. This targeted delivery of water means that the plants receive the moisture they need without wastage, making it an efficient and effective irrigation method, especially in water-scarce areas.

In contrast, other tactics such as sprinklers may disperse water over a larger area, often leading to higher evaporation and less efficient use. Flooding techniques saturate all soil, which can lead to waterlogging and is unsuitable for many crops. Hand watering, while potentially effective, is labor-intensive and lacks the precision and efficiency offered by a drip irrigation system. Thus, option B distinctly encapsulates the function and benefits of a drip irrigation system.