Which of the following is a common garnish for cocktails?

A lemon wedge is a common garnish for cocktails due to its versatility and the flavor it adds to various drinks. It not only enhances the visual appeal of the cocktail but also provides a refreshing citrus note that can balance the sweetness or enhance the overall flavor profile. Lemon wedges are often used in drinks like iced tea, gin and tonics, or whiskey sours, making them a staple in bartending.

While cranberry juice is a popular ingredient in many cocktails, it is usually mixed into the drink rather than used as a garnish. Whipped cream typically accompanies desserts rather than cocktails, and though a cinnamon stick is sometimes used as a garnish, it is less common than citrus garnishes like the lemon wedge. This highlights the lemon wedge's status as a quintessential cocktail garnish in the bar industry.