2. Which irrigation method is most suitable for conserving water in arid regions? \[ \begin{array}{ll}\circ & \text { A) Flood irrigation } \\ 0 & \text { B) Spray irrigation } \\ 0 & \text { C) Drip irrigation } \\ 0 & \text { D) Furrow irrigation }\end{array} \]

To determine the most suitable irrigation method for conserving water in arid regions, let's analyze each option: 1. **Flood irrigation**: This method involves flooding the entire field with water. It is inefficient in arid regions as it can lead to significant water loss through evaporation and runoff. 2. **Spray irrigation**: This method uses a system of pipes and pumps to spray water over crops. While it is more efficient than flood irrigation, it can still result in water loss due to evaporation, especially in hot, arid climates. 3. **Drip irrigation**: This method delivers water directly to the base of the plants through a network of tubing and emitters. It minimizes evaporation and runoff, making it highly efficient for water conservation, especially in arid regions. 4. **Furrow irrigation**: This method involves creating furrows between crop rows and allowing water to flow through them. While it is more efficient than flood irrigation, it is not as effective as drip irrigation in conserving water. Based on this analysis, the most suitable irrigation method for conserving water in arid regions is: **C) Drip irrigation**.