What ingredients are included in a fresco bean burrito?

The fresco bean burrito features a unique combination of ingredients that reflects Taco Bell's commitment to providing healthier options without compromising flavor. In this case, the correct answer highlights that the burrito is made with beans, red sauce, onions, and pico de gallo.

Using beans as a primary ingredient contributes to the burrito's protein content, while the addition of red sauce lends a tangy flavor profile. Onions offer a crunchy texture and enhance the overall taste experience, and pico de gallo, which is a fresh salsa made with chopped tomatoes, onions, and cilantro, brings brightness and freshness to the dish.

This combination aligns with the Fresco menu concept at Taco Bell, which is designed to be healthier and lower in calories by incorporating fresh ingredients and eliminating some higher-calorie items like cheese and sour cream, which are common in traditional burritos. Hence, the choice identifies the correct set of ingredients for a fresco bean burrito.