Which of these cocktails typically includes fruit garnishes?

The Whiskey Sour is a classic cocktail that traditionally includes fruit garnishes such as a slice of lemon or an orange wheel, and it’s not uncommon for a maraschino cherry to be added as well. The incorporation of these fruit elements not only enhances the drink visually but also complements the flavors of the cocktail, which combines whiskey, lemon juice, and sugar.

In contrast, while the other options can be garnished in various ways, they don't typically feature fruit as a central element. For example, a Martini is usually garnished with an olive or a twist of lemon peel, while a Moscow Mule is most often served with a lime wedge. The Manhattan traditionally uses a cherry, but it does not usually include fresh fruit slices as part of the garnish. Thus, the inclusion of fruit garnishes is a defining characteristic of the Whiskey Sour among the listed cocktails.