Answer:
1, ΔG<0
Step-by-step explanation:
Gibbs free energy is used to describe the reaction, wether it is spontaneous, not spontaneous or at equilibrium. If it is spontaneous, ΔG<0, if it is not, than ΔG>0, and if it is at equilibrium, ΔG=0.
Therefore, because the said vaporization is a spontaneous process, the correct answer is under 1.