The correct answer is: C. The state government is promoting dry land farming to increase productivity of this soil.
Explanation:
The extremely light soil of Haryana is called sandy soil. It is found in the districts of Mahendragarh, Hisar, Rewari, Gurgaon, and Faridabad. This soil has less ability to absorb water and retain nutrients. It is also prone to erosion. The state government is promoting dry land farming to increase productivity of this soil. However, dry land farming is not a sustainable practice as it leads to soil degradation.
Option A is correct because sandy soil has less ability to absorb water.
Option B is correct because sandy soil is found in the districts of Mahendragarh, Hisar, Rewari, Gurgaon, and Faridabad.
Option D is incorrect because option C is not correct.