Rivers contribute to agricultural success in Southern and Eastern Asia primarily by providing a constant supply of fresh water and serving as important irrigation resources for farming. These water sources are essential for crop cultivation, especially in regions where rainfall may be insufficient or inconsistent.
Thus, the best responses to highlight the role of rivers in agriculture would be:
- They provide a constant supply of fresh water.
- They provide irrigation resources for farming.
Both responses emphasize key ways in which rivers support agricultural activities in these regions.