Which Taco Bell item is made with two crispy taco shells and contains guacamole?

The Double Decker Taco features a unique construction that combines a crispy taco shell with a soft tortilla, and it includes guacamole as one of its ingredients. This layered approach not only provides a delightful texture contrast but also enhances the overall flavor with the addition of the creamy guacamole.

In contrast, the Crunchy Taco consists of a single crispy shell filled primarily with meat, cheese, and lettuce, without the inclusion of guacamole. The Soft Taco features a soft flour tortilla, and while it can include guacamole, it does not have the signature dual-shell structure. The Guacamole Taco, although it suggests a taco with guacamole, does not exist on the Taco Bell menu in the same way. Thus, the Double Decker Taco is distinctly identified by its crispy shells and guacamole, making it the correct choice in this context.