Pyrethrin used in mosquito coil is obtained from

The correct answer is (b), an insect. Pyrethrins are a group of natural insecticides derived from chrysanthemum flowers. They are effective against a wide range of insects, including mosquitoes, flies, and fleas. Pyrethrins are considered to be relatively safe for humans and other animals, but they can be toxic to fish and other aquatic life.

(a) is incorrect because seed plants do not produce pyrethrins.
(c) is incorrect because bacteria do not produce pyrethrins.
(d) is incorrect because fungi do not produce pyrethrins.