What is the process called when melted butter solidifies?

The process in which melted butter solidifies is called change of state. Change of state is any change from one state, it accompanied by alteration of the chemical composition.

The process in which melted butter solidifies is called change of state. Change of state is any change from one state, it accompanied by alteration of the chemical composition + and it is physical change.
 

Chewy,wrapped,not in all white,the wrapper is clear

Most likely a is the answer - because  you generate   38 atp's but also consume an atp.   each atp gives approx. less than 4 kcal so probably a is the closest answer.