I am not sure I understand what this question asks about. Oxes are relatively rare these days, as most young bulls end as a beef Then, oxes were never quite natural. Not to mention the fact I have no idea what ox can be further reduced to.
Lol, no, I was talking about oxidation and reduction reactions, especially those relating to electrochemistry.
I guessed redox because an element gains an electron, thus the electron loses energy. Oxidation on the other hand would require an input of energy to remove an electron. So I guessed that the one that didn't require an outside input of energy. Honestly though, It was a shot in the dark. We get a lot of these on our tests, really just guessing using what you learned doing other things.