Which of the following processes will lead to increase in entropy of universe?

The depression in freezing point ${\mathrm{\Delta T}}_{\mathrm{f}}={\mathrm{K}}_{\mathrm{f}}\mathrm{m}=2\mathrm{KKg}/\mathrm{mol}\times 1.5\mathrm{m}=3\mathrm{K}$

The freezing point of pure water is $273\mathrm{K}$

Freezing point of solution $=273-3=270\mathrm{K}$

Option (B) represents the correct graph. In this graph, the freezing point of the solution is shown as 270 K. Also with the increase in temperature, the vapour pressure of pure water and mixture increases.