Given scientific reason. (1) Modern methods of irrigation help us to use water economically. Why?​

Modern methods of irrigation help us use water economically, thereby conserving water. In addition, such methods help save time and labour. Hence, they are more efficient than traditional methods of irrigation.

In the drip irrigation, we lay plastic pipes in rows near the crops or plants. These pipes have holes in them. The water seeps from these holes drop by drop, hence the name drip irrigation. Drip irrigation is one of the most efficient irrigation methods as it reduces water wastage in agriculture.

b would be the right answer