As of 2023, there is only one city in the world's top 20 largest cities that is located in Western Europe: Istanbul, Turkey. While it straddles Europe and Asia culturally, it is often included in discussions about European cities. Therefore, the best answer to the question is B: one. ;
As of 2023, there is only one city in the world's 20 largest cities located in Western Europe, which is Istanbul, Turkey. The answer to the multiple-choice question is B: one. Other major cities in Western Europe, like London or Paris, do not appear in this list.
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