A thermite reaction is a reaction between:

A thermite reaction is an exothermic reaction between metal and metal oxide. When heated, the thermite has an exothermic reduction-oxidation reaction. Many varieties do not explode, but they can create short temperatures and high temperatures in a small area. Thermites come in many forms. metals used in this reaction include aluminium, magnesium, titanium, zinc, silicon, and boron. Aluminium is common due to its high boiling point and low cost.
Example- Aluminium and iron oxides, where aluminium acts as a reducing agent. Your metal oxide is iron oxide. During the reaction, a large amount of energy is released. This heat (energy) is so intense that thermite reactions can be used to heat other metals together.

${\mathrm{Fe}}_2{\mathrm{O}}_3 + 2\mathrm{Al} \to 2\mathrm{Fe} + {\mathrm{Al}}_2{\mathrm{O}}_3 + \mathrm{heat}$

Use of thermite reaction:
Thermite welding is the major use, which is often used to join train tracks, refine metal, and disable weapons, and firearms.

A metal interacting with a metallic or nonmetallic oxide to create a more stable oxide and the corresponding metal or nonmetal of the reactant oxide is known as the thermite reaction.

Hence, the correct option is C).