Right option is (d) Cytotoxic drugs
Explanation: Atrazine, simazine, benomyle, all of these are basic insecticides used in the industry for production of insecticide in India. These are very commonly used in India, whereas, cytotoxic drugs are used as old expired medicines and hence, it’s not an insecticide. Insecticide usually helps to kill and control the population of insects but cytotoxic drug is not categorized as pesticides.