Which type of juice is characterized as having a zesty flavor?

Citrus juice is known for its distinctive zesty flavor, which comes from fruits like oranges, lemons, limes, and grapefruits. These fruits contain high levels of citric acid, which contributes to their bright and tangy taste. This zesty profile makes citrus juices not only refreshing but also versatile in various culinary applications, enhancing both beverages and dishes with their sharp and lively flavor.

In contrast, apple juice tends to be sweeter and milder without the acidity that defines zestiness. Pineapple juice, while tropical and flavorful, has a different sweetness and acidity balance that does not equate to the zestiness of citrus. Cranberry juice may offer a tart flavor, but it lacks the bright and lively character associated with citrus juices. Therefore, the defining zesty flavor is unique to citrus juice, making it the correct answer.