Alcohols feature a hydroxyl (-OH) group attached to a carbon chain

Steps:

• Recall that alcohols are organic compounds with an -OH group bonded to a carbon atom, not oxygen alone.
• Examine each structural formula for the presence of -OH directly attached to a carbon.
• Eliminate options lacking this functional group.
• Confirm the matching option as the alcohol.

Why B is correct:

• Option B shows the -OH group bonded to a carbon atom, matching the definition of an alcohol (R-OH).

Why the others are wrong:

• A lacks -OH; it represents an alkane (only C-H and C-C bonds).
• C has -OH but attached to a carbonyl (C=O), indicating an aldehyde or carboxylic acid, not a simple alcohol.
• D shows oxygen between two carbons (C-O-C), characteristic of an ether.

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

Final answer: B