Answer: Option (c) is the correct answer.
Step-by-step explanation:
A molecule which has hydrogen bonding will have the highest boiling point. So, out of the given options only
will have hydrogen bonding.
Whereas in
there will be dipole-dipole interactions and no hydrogen bonding within the molecule.
In
and
, there will be dipole-dipole interaction in both the molecules.
Thus, we can conclude that
will have the highest boiling point.