The answer is: D. Agrosan
Hydrazine, warfarin, malathion, and sulphur are all chemicals. Agrosan is a brand name for a type of herbicide.
Hydrazine is a colorless, flammable liquid with a strong ammonia-like odor. It is used as a rocket fuel, a propellant, and a reducing agent.
Warfarin is a white, crystalline powder that is used as a rodenticide and a blood thinner.
Malathion is a yellow, oily liquid that is used as an insecticide.
Sulphur is a yellow, non-metallic element that is found in nature. It is used in the production of sulfuric acid, gunpowder, and matches.