The given question is incomplete, the complete question is attached below.
Answer :
The correct option is, E.
Explanation :
Carboxylic acid is a functional group in which the the [tex]-COOH[/tex] group is directly attached to the end of alkyl group of carbon.
The general formula of carboxylic acid is, [tex]R-COOH[/tex]
Aldehyde is a functional group in which the the [tex]-CHO[/tex] group is directly attached to the end of alkyl group of carbon.
The general formula of aldehyde is, [tex]R-CHO[/tex]
Alcohol is a functional group in which the the [tex]-OH[/tex] group is directly attached to the end of alkyl group of carbon.
The general formula of alcohol is, [tex]R-OH[/tex]
Hence, the correct option is, E.
