Latent heat of vaporization refers to which changes of state? liquid to gas or gas to liquid solid to gas or gas to solid solid to liquid or gas to liquid gas to liquid or liquid to solid

The latent heat of vaporization is the amount of heat that is needed to be supplied to a substance to turn from liquid to gas. On the other note, this is also the amount of heat that needs to be removed of the substance for its phase to change from gas to liquid.

I would have to say that among the choices given, the latent heat of vaporization would have to be the first choice, liquid to gas or gas to liquid.