The correct option is <u>C. Glucose and oxygen</u>
Explanation:
Cellular respiration can be described as a process in which cells convert glucose and oxygen into carbon dioxide and water, along with the release of energy molecules i.e ATP. Hence, glucose and oxygen are the reactants for this reaction whereas carbon dioxide and water are the products.
The process of cellular respiration is essential for energy and it takes places in the mitochondria of the cell. The reason why mitochondria are known to be the power house of a cell.