Final answer:
Taco Bell's "Doritos Locos Tacos" is an example of co-branding.
Step-by-step explanation:
One of Taco Bell's most successful new products, the "Doritos Locos Tacos", is an example of co-branding. Co-branding is when two or more recognized brands combine their products or services to create a new offering. In this case, Taco Bell partnered with Doritos to create tacos with shells in the flavors of Doritos taco chip varieties.