A South African citizen wants to migrate. To which of the following places is the citizen MOST likely to migrate?
An area that is 170 miles away with a population of 20,000

An area that is 50 miles away with a population of 20 million

An area that is 70 miles away with a population of 7,000

An area that is 1,500 miles away with a population of 1 million

An area that is 2,000 miles away with a population of 15 million