Vinod brought a solid chocolate bar to school to eat for a snack. He left it in his pocket. When he went to recess.
he took out the chocolate bar to eat, but it was a sticky puddle inside the wrapper
What is the best explanation for what happened to the chocolate bar?
a. His body heated up the solid chocolate bar turning it to a liquid.
b. The temperature caused molecules in the chocolate bar to slow down, turning it into a liquid.
c. The chocolate bar released heat into the air and turned into a liquid
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d. The Sun changed the chocolate bar chemically until it formed a liquid