The correct answer is A. Rohtas.
Rohtas is the least irrigated district by tubewells in Bihar. In 2018-19, only 10.3% of the agricultural land in Rohtas was irrigated by tubewells, compared to the state average of 27.8%. This is due to a number of factors, including the low groundwater table in Rohtas, the high cost of installing and operating tubewells, and the lack of access to electricity in many parts of the district.
Araria is the second least irrigated district by tubewells in Bihar, with only 11.4% of its agricultural land irrigated by tubewells. Samastipur is the third least irrigated district, with 12.2% of its agricultural land irrigated by tubewells. Gaya is the fourth least irrigated district, with 12.6% of its agricultural land irrigated by tubewells.
The following are some of the reasons why Rohtas is the least irrigated district by tubewells in Bihar:
- The groundwater table in Rohtas is low. This means that it is difficult and expensive to extract water from the ground using tubewells.
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