You are presented with the quiz "What allows candles to burn and wax to melt?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "melting is when solids are heated above their melting point" and "softer melt point wax is used to produce an even burning candle". So, what's the best answer to the question?
Choose from: + nektar + lids + energy + sugar + heat + displays + jars + power
heat