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.
Answer:
World War II the chief Allied powers were Great Britain, France (except during the German occupation, 1940–44), the Soviet Union (after its entry in June 1941), the United States (after its entry on December 8, 1941), and China.
Explanation:
Boycotts against products made by slave owners
made poems/stories about slavery