Which of the following is a name for a refreshing iced option offered at Starbucks?

Beverages that are specifically designed to be served chilled or over ice are categorized as iced options. In the case of Starbucks, an iced tea refill refers to a drink that is served cold, ensuring a refreshing experience ideal for warmer weather. This choice emphasizes the core characteristic of being an iced beverage, which aligns with the question regarding what constitutes a refreshing iced option.

Other options, while they may relate to drinks offered at Starbucks, do not fit the criteria for iced beverages as directly as the iced tea refill. For instance, a hot tea refill is specifically served hot and does not offer the refreshing iced experience intended by the question. The Mango Black Tea Lemonade is indeed a refreshing drink, but it is a specific flavor option rather than a generic category of iced drink, while Peach Tranquility typically refers to a blended herbal tea that is not served as an iced refill option. Therefore, the iced tea refill is the ideal answer for a refreshing iced option at Starbucks.