the light produced by magnesium when burned the evaporation of water from a solution the fizzing of a soft drink the heat from a light bulb
I gave my students this multiple choice question: Which is evidence of a chemical reaction?

Only one answer is correct among these 4 choices:
- the light produced by magnesium when burned
- the evaporation of water from a solution
- the fizzing of a soft drink
- the heat from a light bulb

Could you tell me which one is correct?

the light produced by magnesium when burned