Plant origin insecticides are:
A. Nicotine
B. Arsenicals
C. Pyrethrum
D. Phosphamidon
E. Rotinone

Correct option is C

Plant origin insecticides are naturally derived from plants and are used for pest control. Among the given options:

• Nicotine (A) – A plant-derived alkaloid insecticide obtained from tobacco plants.
• Pyrethrum (C) – Derived from chrysanthemum flowers, used as an effective insecticide.
• Rotinone (E) – Extracted from the roots of plants like Derris and Lonchocarpus, used as an organic pesticide.

Whereas:

• Arsenicals (B) – These are synthetic or mineral-based compounds, not plant-derived.
• Phosphamidon (D) – A synthetic organophosphate insecticide, not plant-derived.