Two reactants combine to form one new product. Which of the following best describes this type of chemical reaction? Combustion Synthesis Decomposition Single Replacement

i think its Synthesis

Synthesis

Explanation:

Synthesis is also known as combination. It is a reaction that involves the formation of a single product from two or more reactants.

C + D → E

The formation of compounds from the union of their constituent elements falls into this category of reaction.

Cu + O₂ → CuO