Latent heat of vaporization refers to which changes of state?

Latent heat of vaporization refers to a phase change from a liquid state to gas state and from gas state to a liquid state.

The amount of heat is the same, no matter the direction of the phase change.

If the phase change is from liquid to gas, the heat is absorbed and if the phase change is from gas to liquid the heat is released. 

Question was not very clear if there are specific answer choices tell me and i'll try to you more. hope this though2 laps is 1 min. we know that for each min she does two times the amount of laps. for 12 laps we can do 12/2 which does give us 12 laps in 6 mins not 16 mins.