UPSC 2020: What is/are the advantage/advantages of zero tillage in agriculture ? 1. Sowing of wheat is possible without burning the residue of previous crop. 2. Without the need for nursery of rice saplings, direct planting of paddy seeds in the wet soil is possible. 3. Carbon sequestration in the soil is possible. :

Studies of the post-1991 period (e.g. NITI Aayog data) show: (1) labour productivity rose in both urban and rural areas, not just urban, so statement 1 is incorrect; (2) the rural share of the total workforce has fallen, so statement 2 is incorrect; (3) the rural non-farm (manufacturing & services) sector expanded, so statement 3 is correct; (4) the growth rate of rural employment decelerated and turned negative during the high-growth years, so statement 4 is correct. Thus only statements 3 and 4 are correct → option b. ([edukemy.com](https://edukemy.com/blog/upsc-prelims-2020-question-58/?utm_source=openai))