Final answer:
The top tier of the global economy pyramid mostly consists of people who live in North America, Western Europe, and Japan.
Step-by-step explanation:
The correct answer is B. The top tier of the global economy pyramid mostly consists of people who live in North America, Western Europe, and Japan.
This is based on the information provided, which states that high-income countries in North America, Western Europe, the Middle East-North Africa (MENA), Japan, and Australia have 80% of their population living in urban areas. These regions are considered the top tier of the global economy.
Other regions with between 50% and 80% of their population living in urban areas, such as Eastern Europe, East Asia, North and Southern Africa, and South America, make up the second tier of the global economy.