Identifying alcohols by functional group

Steps:

• Recall that alcohols contain a hydroxyl (-OH) group attached to a carbon atom.
• Examine each choice for the presence of -OH bonded to carbon (not oxygen or hydrogen alone).
• Eliminate compounds with other functional groups like carbonyls or halides.
• Confirm the option with the correct -OH structure.

Why B is correct:

• B has the -OH group directly attached to a carbon chain, matching the general formula R-OH for alcohols.

Why the others are wrong:

• A lacks a hydroxyl group; it appears to be a hydrocarbon.
• C contains a carbonyl (C=O), making it a ketone or aldehyde.
• D has a halogen instead of -OH, classifying it as an alkyl halide.

Not enough information on exact structures, but based on standard identification.

Final answer: B