A. A ketone
B. An aldehyde
C. A carboxylic acid
D. An ether
Answer: An aldehyde
A. A ketone
B. An aldehyde
C. A carboxylic acid
D. An ether
Answer: An aldehyde
Additional Information: The oxidation of a primary alcohol typically produces an aldehyde, which can further oxidize to a carboxylic acid.