Which of the following is a common type of bar garnish?

A lemon wedge is a common type of bar garnish because it adds both visual appeal and flavor enhancement to cocktails. Often used in drinks such as iced tea, water, and various cocktails, the fresh, acidic taste of lemon complements a wide range of spirits and mixers. The wedge can be squeezed into the drink to release its juice or simply used as a decorative element on the rim of the glass, making it versatile for bartenders.

In contrast, while a mint sprig is also popular, it serves more often as a garnish for specific cocktails like the Mojito, rather than being universally applicable across various drink types. A sugar cube is generally used as an ingredient in certain drinks rather than as a garnish, and olive oil, while it has culinary uses, is rarely featured as a garnish in traditional bartending.