Which redox reaction involves the use of an electron?

In a redox reaction, oxidation refers to the process in which a substance loses electrons. This loss of electrons results in an increase in the oxidation state of that substance. When a substance is oxidized, it cannot reduce itself without the involvement of another species acting as the electron acceptor. Thus, oxidation directly involves the use of electrons in the sense that an electron is removed from the oxidized species during the reaction.

While reduction, on the other hand, refers to the addition of electrons, it does not pertain to the question's focus on the reaction that involves losing electrons. Inhalation and neutralization do not pertain to redox processes in the same manner, as inhalation is a physiological process and neutralization involves acid-base reactions rather than redox reactions. Therefore, among these options, oxidation is the process that specifically involves the use of electrons through their loss in redox reactions.