What process causes latent heat being released into the upper troposphere?

Question

Question Quiz BPL Hot Air - Balloon Pilot License - Meteorology

QuizVDS · Accepted Answer

Cloud forming due to condensation

QuizVDS · Answer

Descending air across widespread areas

QuizVDS · Answer

Evaporation over widespread water areas

QuizVDS · Answer

Stabilisation of inflowing air masses

Id 237 - BPL Hot Air - What process causes latent heat being released into the upper troposphere?