Answer: C.carbon dioxide
Explanation: Solution is a mixture containing solute and a solvent.
Solute is the component which is present in small amount. Solvent is the component which is present in larger amount.
Thus water acts as the solvent and
acts as the solute to form carbonic acid in all the carbonated beverages.
![CO_2+H_2O\rightarrow H_2CO_3](https://img.qammunity.org/2019/formulas/physics/middle-school/5oqf692tgget4j3tuz2cge5qiu0y3ptom1.png)