Answer: Option B
Explanation:
Recycling the runoff from the irrigation system can be a sustainable practice. The word sustainable can be defined as the method which provides enough resources for today and keeps on saving the resources for the future generations as well.
The recycling of the materials can be considered as a sustainable practice as the left over can be recycled and the need of raw materials for the next process will be less than normal.
Recycling allows the extraction of useful material from the waste and using it and ensures it use again.
Hence, the correct answer would be Option B
