Respuesta :

Combustion of methane. 
reason behind this is because an endothermic reaction basically means releasing heat when a chemical reaction occurs "endo" meaning outside and "thermic" meaning heat  

The reaction which is endothermic in nature is the reaction in a cold pack.

What is endothermic recation?

Those reactions in which energy is absorbed for the formation of product is known as endothermic recation.

So, if any reaction takes place in the cold pack then in this condition energy is absorbed by the environment by the reactant molecules for the formation of product and forwarding the reaction. Except this all given reactions are exothermic reactions means they releases heat during the process.

Hence, option (C) is correct.

To know more about endothermic reaction, visit the below link:
https://brainly.com/question/6357350