The correct answer is option A: acetone.
For a substance to be classified as an alcohol it must posses the -OH functional group. Compounds that posses this -OH functional group usually have the ending -ol.
Acetone is a ketone, this is evidenced by the ending -one. It has the functional group -C=O.
Hence, acetone is not alcohol. The structure of acetone is shown in the image attached.
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