The correct answer is D. Ketone.
A ketone is a functional group with the structure RCOR’, where R and R’ are alkyl groups. The general formula for a ketone is RCOR’, where R and R’ are alkyl groups. The functional group is a carbonyl group, which is a carbon atom double-bonded to an oxygen atom.
Propanone is a ketone with the chemical formula CH3COCH3. It is a colorless, flammable liquid with a peppermint-like odor. It is used as a solvent, a fuel, and a chemical intermediate.
Carboxylic acids are organic compounds that contain a carboxyl group (-COOH). The general formula for a carboxylic acid is R-COOH, where R is an alkyl group. The functional group is a carboxyl group, which is a carbon atom double-bonded to an oxygen atom and also bonded to a hydroxyl group (-OH).
Aldehydes are organic compounds that contain an aldehyde group (-CHO). The general formula for an aldehyde is R-CHO, where R is an alkyl group. The functional group is an aldehyde group, which is a carbon atom double-bonded to an oxygen atom and also bonded to a hydrogen atom.
Alcohols are organic compounds that contain an hydroxyl group (-OH). The general formula for an alcohol is R-OH, where R is an alkyl group. The functional group is an hydroxyl group, which is a carbon atom bonded to an oxygen atom and also bonded to a hydrogen atom.