which of the following compounds is a phenol? none of the above

which of the following compounds is a phenol? none of the above
Answer
Brief Explanations:
A phenol is an aromatic compound with a hydroxyl (-OH) group directly attached to a benzene - ring carbon. The first compound has -CH₂CH₂OH group attached to benzene, not -OH directly. The fourth compound is an aldehyde derivative of benzene. The second compound has a hydroxyl group directly attached to the benzene ring and is a phenol derivative (nitrophenol). The third compound has substituents (methyl, chloro, nitro) but no -OH directly on the benzene ring.
Answer:
The second compound (the one with -OH and -NO₂ on the benzene ring)