When in a chemical reaction, some new species is formed due to both oxidation and reduction. It is called a redox reaction. And redox reactions involve the gain or loss of electrons. Hence, option (C) is correct.
What is a redox reaction?
Any chemical reaction in which both oxidation, as well as reduction, takes place is known as a redox reaction.
Consider a chemical reaction,
[tex]H_{2} + F_{2}[/tex] ⇒ [tex]2HF[/tex]
In the above chemical reaction, the formation of hydrogen fluoride takes place in which the hydrogen is oxidized and losses two electrons, so each hydrogen becomes positive. Simultaneously, those two electrons are gained by the Fluorine, which is reduced.
Thus, we can conclude that the redox reactions involve the gain or loss of electrons.
Learn more about the redox reactions here:
https://brainly.com/question/13978139
