The correct answer is A. Phenol.
Phenol is a chemical compound with the molecular formula C6H5OH. It is a white, crystalline solid that is soluble in water. Phenol is a weak acid and is used in a variety of products, including disinfectants, antiseptics, and solvents.
Ethanol is a chemical compound with the molecular formula C2H5OH. It is a colorless, flammable liquid that is the main component of alcoholic beverages. Ethanol is also used as a solvent, fuel, and in the production of other chemicals.
Acetic acid is a chemical compound with the molecular formula CH3COOH. It is a colorless, sour-tasting
liquid that is the main component of vinegar. Acetic acid is also used in a variety of products, including food additives, cleaning products, and pharmaceuticals.Oxalic acid is a chemical compound with the molecular formula H2C2O4. It is a white, crystalline solid that is soluble in water. Oxalic acid is a strong acid and is used in a variety of products, including cleaning products, rust removers, and in the production of other chemicals.
In conclusion, the correct answer is A. Phenol.