What common feature do all the listed Frappuccinos share?

All the listed Frappuccinos share the feature of being blended beverages. This characteristic is essential to a Frappuccino, which typically consists of a combination of coffee (or a coffee alternative), ice, and additional flavor ingredients, all blended together to create a smooth, icy drink. This blending process distinguishes them from other types of beverages served at Starbucks.

While some Frappuccinos may include coffee as an ingredient, not all variations do; there are also non-coffee options available, such as those based on cream bases or flavored syrups. Additionally, whipped cream is often a topping, but it is not a mandatory component of every Frappuccino. Serving temperature is another differentiator, as Frappuccinos are primarily served cold, not hot. Thus, the defining quality of these beverages is indeed that they are blended, making option B the common feature among them.