releases heat and is endothermic. releases heat and is exothermic. absorbs heat and is endothermic. absorbs heat and is exothermic.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: When coal burns, the reaction
Possibilities:
- releases heat and is endothermic.
- releases heat and is exothermic.
- absorbs heat and is endothermic.
- absorbs heat and is exothermic.

releases heat and is exothermic.