The molecule CH\(_3\)CH\(_2\)OH contains two carbon atoms, an -OH functional group, and lacks double or triple bonds, classifying it as an alcohol. The IUPAC nomenclature for alcohols is determined by the number of carbon atoms:- One carbon: Methanol- Two carbons: Ethanol- Three carbons: Propanol- Four carbons: ButanolAs this compound has two carbon atoms, its IUPAC name is ethanol. Therefore, option (2) is correct.