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.Select the correct answer using the code given below:

1. A

   1 and 2 only

   1 and 2 only. Soil carbon also holds.

2. B

   2 and 3 only

   2 and 3 only. Wheat after rice without burning also holds.

3. C

   3 only

   3 only. Under-counts.

4. D

   1, 2 and 3

   All three. Wheat into rice residue without burning; wet direct-seeded rice without a nursery; carbon left in the soil.

Summary. Official key is (d) 1, 2 and 3. Zero tillage lets wheat go in without burning paddy stubble, allows direct-seeded rice, and keeps carbon in the soil.