The IMFs are the forces that the molecules experience in the interaction between them and with other molecules:
a. False, the molecule has to contain hydrogen and a more electronegative element like oxygen or nitrogen. The hydrogen itself is not enough.
b. False, the gases have the weakest IMFs (between solids, liquids, and gases).
c. False. In fact, the London dispersion forces are most likely present in the apolar molecules like hydrocarbons.
d. True. The dipole-dipole forces can only be present in polar molecules because they need a charge distribution.
Then, the answer is d.