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

Question

PPL(A) - Private Pilot License - Meteorology - What process causes latent heat being released into the upper troposphere?

QuizVDS · Accepted Answer

Cloud forming due to condensation

QuizVDS · Answer

Descending air across widespread areas

QuizVDS · Answer

Stabilisation of inflowing air masses

QuizVDS · Answer

Evaporation over widespread water areas

PPL(A) EN: What process causes latent heat being released into the upper troposphere?