Because energy is being conducted to it by conduction
Salutations!
A change that occurs when a solid melts or a liquid freezes is an example of a _____ change.
A change that occurs when a solid melts or a liquid freezes is an example of a phase. change. A phase change is when one state of matter changes into another state of matter.
Thus, your answer is option B.
Hope I helped :D
According to Raoult's law, Vapor pressure is directly proportional to the mole fraction of the solution. As 1.0 M CaF2 has least moles here, it has lowest vapor pressure.
In short, Your Answer would be Option D
Hope this helps!