A. Formic acid
B. Acetic acid
C. Propanoic acid
D. Butanoic acid
Answer: Butanoic acid
A. Formic acid
B. Acetic acid
C. Propanoic acid
D. Butanoic acid
Answer: Butanoic acid
Additional Information: Among the options, butanoic acid has the highest boiling point due to stronger intermolecular forces.