Which change is exothermic?

Icebergs shrink as global temperatures rise.

Rain becomes sleet when the temperature falls below 0°C.

Solid water turns to liquid water as energy is added.

The change that is exothermic is solid water turning to liquid water as energy is added.

are you sure

I apologize for the incorrect response. The change that is exothermic is rain becoming sleet when the temperature falls below 0°C.