The correct answer choice would be only an endothermic reaction, however if you are also considering the fact that the candle is burning and not just melting, that would make the correct answer both exothermic and endothermic reactions. You didn’t attach an image so I’m not sure if you’re referring to melting only or burning as well, but if I were you I would put the answer choice, “only an endothermic reaction”
Hope this helped :)
