Tanya had a hard time deciding between the big burger and the crispy chicken sandwiches her two favorites she chose the chicken because she had more recently had a burger what is her opportunity cost

By definition, opportunity cost is the cost of the next alternative that you gave up because you choose another one. In this case, there are two alternatives: the big burger, and the chicken sandwich. Because Tanya chose chicken sandwich, then her opportunity cost is the cost of the big burger.