The ecofriendly insecticide is:

✅ Explanation: Nimbicidine is derived from the neem tree (Azadirachta indica) and is considered an eco-friendly insecticide. It has a low toxicity to mammals and birds, and it breaks down quickly in the environment. Nimbicidine works by disrupting the growth and development of insects, making it an effective tool for pest control while minimizing harm to beneficial organisms and the ecosystem.

📌 Other Options Explanations:
-Malathion: A broad-spectrum organophosphate insecticide, effective but can be harmful to beneficial insects and has a moderate environmental persistence
-Thiodan (Endosulfan): A broad-spectrum organochlorine insecticide that has been banned or severely restricted in many countries due to its high toxicity and environmental persistence.
-Permethrin: A synthetic pyrethroid insecticide, effective against a wide range of insects but can also harm beneficial insects and aquatic life.