Agro-chemical based agriculture includes
fertilisers and pesticides
genetically modified crops
RNA interference
all of these
As we have discussed in Agrochemicals & Case Study of Organic Farming -
An agrochemical or agrichemical, a contraction of agricultural chemical, is a chemical product used in agriculture.
- wherein
In most cases, agrichemical refers to pesticides including insecticides, herbicides, fungicides and nematicides.
Hence, the correct option is (a).