Answer:
It is a combustion reaction, where the compound METHANE, which would be CH4, is combusted
Step-by-step explanation:
In combustion, the reactants are always the compound that will combuste the most oxygen, and in the products there is water and carbon dioxide as the product.
But there are two types of combustions, the complete and the incomplete, in this case how the methane was completely combusted and not in a partial way it would be a complete combustion.
Combustion reactions are EXOTHERMIC AND IRREVERSIBLE reactions.