What are the main types of chemical reactions?

The correct answer is comprehensive in identifying the main types of chemical reactions recognized in chemistry. It includes synthesis reactions, where two or more reactants combine to form a single product. Decomposition reactions, in which a single compound breaks down into two or more simpler substances, are also crucial, as they illustrate how compounds can be transformed into their constituent elements or simpler compounds.

Single replacement reactions occur when an element replaces another in a compound, showing how elements can interact and change partners. Double replacement reactions involve the exchange of substances between two compounds, demonstrating the ability of compounds to react and form new combinations. Lastly, combustion reactions, which involve the rapid reaction of a substance with oxygen to produce heat and light, are fundamental in both everyday reactions and various industrial processes.

This distinction covers a wider breadth of chemical interactions than found in the other options, ensuring a fuller understanding of the types of reactions that can occur in chemical processes.