It is present in o-nitrophenol. It is a compound with a phenolic group and a nitro group that is attached to the benzene ring. The intramolecular hydrogen bonding is between the hydrogen atom of -OH and the oxygen atom of the nitro group within the same molecule.
So, the correct answer is (A): o-nitrophenol
Alcohol is a derivative of water (H2O) that has one, two, or more hydroxyl groups that are attached to a carbon atom of a hydrocarbon chain (an alkyl group). It is one of the most common organic compounds used in sweeteners, fragrances, and medicine.
Read More: Types of Alcohol