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You answered "D". Click "CONTINUE" to proceed to the next question.
Interesting fact:
You’ve probably heard that Mexico City is frequently afflicted by earthquakes. But did you know that the megalopolis sinks 10–15 centimetres (4-6 inches) each year? This is because the city was built over a lake. In the last 60 years, it has sunk about 10 metres (32 feet)!