What reactants form a combustion reaction?

Oxygen and hydrogen is one example^^

Explanation:

“Combustion Reactions-

A combustion reaction is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O2 as one reactant.

for example: The chemical reaction was a simple one: hydrogen combining with oxygen to produce water.”

article:https://flexbooks.ck12.org/cbook/ck-12-chemistry-flexbook-2.0/section/11.6/primary/lesson/combustion-reaction-chem

have a lovely day!

Answer:

Hydrocarbon and oxygen

Explanation:

"a substance reacts with oxygen gas, it must involve O² as one of the reactants."

Using this, we can confirm Hydrocarbon and oxygen is a valid one.