Propoxur is

Answer: Option A

Propoxur is Carbamate.
Propoxur (Baygon) is a carbamate non-systemic insecticide introduced in 1959 with a fast knockdown and long residual effect used against the turf, forestry, and household pests and fleas.
Carbamate insecticides kill insects by irreversibly inactivating the enzyme acetylcholinesterase. It is also used in pest control for other domestic animals, Anopheles mosquitoes, ants, gypsy moths, and other agricultural pests.