Here's why:

* Solvents dissolve substances: Carbonated water acts as a solvent to dissolve the other ingredients in Sprite, such as sugar, citric acid, and flavorings.

* Carbonation aids solubility: The carbon dioxide dissolved in the water helps to further dissolve the other ingredients, contributing to the refreshing taste of Sprite.

While other ingredients are present, they are dissolved in the water and don't act as primary solvents themselves.