multiple - choice question\nc₂h₄ + o₂ --> co₂ + h₂o\ndouble replacement\nsingle replacement\nsynthesis\ndecom…

Brief Explanations:

Combustion reactions involve a substance reacting with oxygen to produce carbon - dioxide and water (or other products depending on the reactant). Here, $C_2H_4$ (ethylene) reacts with $O_2$ to form $CO_2$ and $H_2O$, which is characteristic of a combustion reaction. In double - replacement reactions, two ionic compounds exchange ions. In single - replacement reactions, one element replaces another in a compound. In synthesis reactions, two or more substances combine to form one product. In decomposition reactions, one substance breaks down into two or more substances.

Answer:

E. combustion