Q: The complete combustion of alkanes to carbon dioxide is an extremely __________ reaction.


Read this paragraph and choose the correct option from the provided answers:

Each step in the process is either a gain of oxygen or a loss of hydrogen. Each step also releases energy, which explains why the complete combustion of alkanes to carbon dioxide is an extremely exothermic reaction.

 Choices:

- hydrolic

- geothermal

- reactive

- exothermic


A:
exothermic