Answer: Option (b) is the correct answer.
Explanation:
In the given structure a benzene molecule, that is, [tex]C_{6}H_{5}[/tex] is attached. And, further an aldehyde group that is, CHO group is attached to the benzene molecule.
Hence, suffix "aldehyde" will be added to the name of this molecule.
Whereas a group with formula [tex]C_{6}H_{5}OH[/tex] is known as phenol.
Therefore, we can conclude that the name of this given compound is benzaldehyde.
