Correct choice is (b) Organic
Best explanation: Sulfoalklyating agents are called Organic sulfates because they contain one to three carbon atoms and a reactive functional group (e.g., hydroxyl, aldehyde, or olefinic un saturation) allowing easy attachment to an organic compound of higher molecular weight (e.g., a water-insoluble dye) upon which it is desired to confer the properties of a sulfonate group, especially water solubility.