18. in which physical change, energy is given?
c) boiling
a) condensation
b) evaporation
d) melting

C. Condensation.

Boiling, evaporating, and melting all lose energy because that liquid is becoming less. For instance, water melts or could be boiled then it would evaporate. What happened to the water? It loss it's energy to continue to stay as water.

Condensation brings water back. That requires energy. Hope this helps!