Correct Option: B

Inorganic substances, oils, plant extracts used as insecticides are called first generation pesticides. Synthetic organic compounds are known as second generation pesticides. Insect hormones are third generation pesticides. Pheromones are the chemical substances which when released into an animal's surroundings, influence the behaviour or development of other individuals of the same species. Insect hormone analogues help in trapping the insects by confusing them as they mimic the odour of pheromones.